... what we observe is not nature in itself but nature exposed to our method of questioning ... when searching for harmony in life one must never forget that in the drama of existence we are ourselves both players and spectators. - W. Heisenberg

If a man never contradicts himself, the reason must be that he virtually never says anything at all. - M. Unamuno

Consciousness is associated with the learning of the living substance; its knowing how is unconscious. - E. Schroedinger

As far as you can avoid it, do not give grief to anyone. Never inflict your rage on another. If you hope for eternal rest, feel the pain yourself; but don't hurt others. - O. Khayyam

To do this job, I have worked infinitely hard; whoever works just as hard would obtain the same result. - J. S. Bach

Energy is in fact the substance from which all elementary particles, all atoms and therefore all things are made, and energy is that which moves. Energy is a substance, since its total amount does not change, and the elementary particles can actually be made from this substance as is seen in many experiments on the creation of elementary particles. Energy can be changed into motion, into heat, into light and into tension. Energy may be called the fundamental cause for all change in the world. - W. Heisenberg

Science may set limits to knowledge, but should not set limits to imagination. - B. Russell

Technology, the skills of making and doing things of service to society, is older than science, the systematic study of the human environment. - R. A. Buchanan

Innovations are not often celebrated. - J. E. Hoover

The ship is safer at the shore, but it is not built for that purpose. - P. Coelho

I am an optimist about human capabilities, if not about human motives. - R. A. Buchanan

In theory, theory and practice are the same; in practice, they are not. - Anonymous

Stealing from one author is called plagiarism, but stealing from many authors is called research. - W. Mizner

Everything should be made as simple as possible, but not simpler. - A. Einstein

The elementary particles in Plato's Timaeus are finally not substance but mathematical forms. "All things are numbers" is a sentence attributed to Pythagoras. - W. Heisenberg

The final equation of motion for matter will probably be some quantized nonlinear wave equation ... This wave equation will probably be equivalent to rather complicated set of integral equations, which have Eigenvalues and Eigensolutions ... These Eigensolutions will finally represent the elementary particles. - W. Heisenberg

To wisely live your life, you don't need to know much; just remember two main rules for the beginning: you better starve, than eat whatever; and better be alone, than with whoever. - O. Khayyam

Today, there is nothing but this pen in my hand; it is yet to serve the mankind. - A. Beyhaqi

The house is a machine for living. - Le Corbusier

It is insanity to repeat the same experiment over and over, but to hope to obtain different results. - A. Einstein

There is no truth in science and engineering; there are only theories supported by evidence, until they are disproven by counter evidence. - A. A. Aliabadi

The palest ink is better than the strongest memory. - Anonymous

Don't be satisfied with stories, how things have gone with others. Unfold your own myth. - J. M. Rumi

Others have seen what is and asked why. I have seen what could be and asked why not. - P. Picasso

If you are the smartest person in the room, then you are in the wrong room. - Anonymous

Life begins at the end of your comfort zone. - N. D. Walsch

Oh threats of hell and hopes of paradise! one thing at least is certain - this life flies; one thing is certain and the rest is lies - the flower that once has blown forever dies. - O. Khayyam

We must measure, accurately, what is measurable, and make measurable what is not measurable. - M. Gharib

Engineering intuition is a powerful tool, but only to inspire further analysis, not to guide design. To design we must calculate. - A. A. Aliabadi

Real science can be hard, well, challenging to give it a positive spin, but like classical literature or playing the violin, worth the struggle. - R. Dawkins

It is true that scientists, more than, say lawyers, doctors or politicians, gain prestige among their peers by publicly admitting their mistakes. - R. Dawkins

... no testimony is sufficient to establish a miracle, unless the testimony be of such a kind, that its falsehood would be more miraculous than the fact which it endeavours to establish. - D. Hume

It's too bad if a heart lacks fire, and is deprived of the light of a heart ablaze. The day on which you are without passionate love is the most wasted day of your life. - O. Khayyam

The first home is the stage. The second home is the studio. - K. Richards

Life is a funny thing. Nobody wants to get old, but you don't want to die young either. You just want to follow this thing down the path. - K. Richards

Of all phenomena the second most unpredictable is weather. The most unpredictable is human behaviour. - A. A. Aliabadi

... the great majority of people can scarcely have any well-founded judgement concerning the correctness of certain important general ideas or doctrines. Therefore, the word belief can for this majority not mean perceiving the truth of something but can only be undestood as taking this as a basis for life. - W. Heisenberg

The brain is a three pound mass you can hold in your hand that can conceive of a universe a hundred billion light-years across. - M. C. Diamond

A manager's dilemma: how can I have others deliver what I promise? - W. D. Lubitz

Beyond the earth, beyond the farthest skies I try to find heaven and hell. Then I hear a solemn voice that says: "heaven and hell are inside." - O. Khayyam

Man is after all a very finite being in his capacities and powers to do actual work; but when it comes to planning, one mind can in a few hours think out enough work to keep a thousand men employed for years. - W. Roebling

If one has a theory, one needs to be willing to try to prove it wrong as much as one tries to prove that it is right. - L. M. Krauss

I am not afraid of death because it is an experiment, by which I know the truth about afterlife. - A. A. Aliabadi

A chain is only as strong as its weakest link. - Anonymous

An experiment is a question which science poses to Nature, and a measurement is the recording of Nature's answer. - M. Planck

Drink wine and look at the moon and think of all the civilisations the moon has seen passing by. - O. Khayyam

We have no right to assume that any physical laws exist, or if they have existed up until now, that they will continue to exist in a similar manner in the future. - M. Planck

The first principle is that you must not fool yourself and you are the easiest person to fool. - R. Feynman

It takes three generations to train a world class researcher. - A. A. Aliabadi

You can't manage what you can't measure. - A. A. Aliabadi

All the intellectual arguments that you can make will not communicate to deaf ears what the experience of music really is. - R. Feynman

Realise this: one day your soul will depart from your body and you will be drawn behind the curtain that floats between us and the unknown. While you wait for that moment, be happy, because you don't know where you came from and you don't know where you will be going. - O. Khayyam

One of the ways of stopping science would be only to do experiments in the region where you know the law. But experimenters search most diligently, and with the greatest effort, in exactly those places where it seems most likely that we can prove our theories wrong. In other words we are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress. - R. Feynman

... physics is like carpentry: using the right tool makes the job easier, not more difficult, and teaching quantum mechanics without the appropriate mathematical equipment is like asking the student to dig a foundation with a screw driver. - D. Griffiths

The purpose of a lecture is not to disseminate knowledge, but to inspire. - A. A. Aliabadi

It's not what we don't know that gets us in trouble. It's what we know for sure that just ain't so. - M. Twain

What can be asserted without evidence can be dismissed without evidence. - C. Hitchens

Poor soul, you will never know anything of real importance. You will not uncover even one of life's secrets. Although all religions promise paradise, take care to create your own paradise here and now on earth. - O. Khayyam

No tree can grow to Heaven, unless its roots reach down to Hell. - C. G. Jung

... an idea is not the same thing as a fact. A fact is something that is dead ... It has no consciousness, no will to power, no motivation, no action ... But an idea that grips a person is alive. It wants to express itself, to live in the world ... human psyche [is] a battle ground for ideas. - J. B. Peterson

Deceitful, inauthentic individual existence is the precursor to social totalitarianism. - V. Frankl

A man's worth is determined by how much truth he can tolerate. - F. Nietzsche

The great majority of us cannot listen; we find ourselves compelled to evaluate, because listening is too dangerous. The first requirement is courage, and we do not always have it. - C. Rogers

There was a water-drop, it joined the sea, a speck of dust, it was fused with earth; what of your entering and leaving this world? a fly appeared, and disappeared. - O. Khayyam

People organize their brains with conversation. If they don't have anyone to tell their stories to, they lose their minds. The input of the community is required for the integrity of the individual psyche ... It takes a village to organize a mind. - J. B. Peterson

Say what you mean, so that you can find out what you mean. Act out what you say, so you can find out what happens. - J. B. Peterson

Mathematicians work ... with an imaginary unit, the square root of -1, called i. We know that i does not figure among the natural numbers. Would you agree that the statement there is an i means nothing else than there are important mathematical relations that are most simply represented by the introduction of the i concept? An equally abstract concept is that of infinity. In short mathematics introduces ever higher stages of abstraction that help us attain a coherent grasp of ever wider realms. - W. Heisenberg

Beware of single cause interpretations. - J. B. Peterson

Competence, not power, is a prime determiner of status. - J. B. Peterson

The fate of the world rests on each new infant---tiny, fragile, and threatened but, in time, capable of uttering the words and doing the deeds that maintain the eternal, delicate balance between chaos and order. - J. B. Peterson

Ah, make the most of what we yet may spend, before we too into the dust descend; dust into dust, and under dust to lie, sans wine, sans song, sans singer, and--sans end! - O. Khayyam

I am no more afraid of my own extinction after death than I am of the nonexistence that had preceded my birth. - D. Hume

To do a job perfectly, first you have to make all possible mistakes. After that, there are no further mistakes to make. - A. A. Aliabadi

I wanted to live, they prevented it; I prayed, they said he is superstitious; I fell in love, they said he is lying; I cried, they said he is looking for an excuse; I laughed, they said he is crazy; please stop the world, I want to disembark - A. Shariati

When your soul and mine have left our bodies and we are burried alongside each other, a potter may one day mould the dust of both of us into the same clay. - O. Khayyam