The mental never influences the physical. It is always the physical that modifies the mental, and when we think that the mind is diseased, it is always an illusion.

It is what we know already that often prevents us from learning.

The experimenter who does not know what he is looking for will not understand what he finds.

When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.

Man can learn nothing unless he proceeds from the known to the unknown.

The terrain is everything; the germ is nothing.

Art is 'I'; science is 'we'.

A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes.

Those who do not know the torment of the unknown cannot have the joy of discovery.

Science increases our power in proportion as it lowers our pride.

All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

The things you do for yourself are gone when you are gone, but the things you do for others remain as your legacy.

I feel like an outsider, and I always will feel like one. I've always felt that I wasn't a member of any particular group.

The same man cannot be both Friend and Flatterer.

In the heat of the Russian summer a sleeping car is the most horrible instrument of martyrdom imaginable.

The sin was mine; I did not understand. So now is music prisoned in her cave, Save where some ebbing desultory wave Frets with its restless whirls this meagre strand.

You can love many people. But the truth is you can only be IN LOVE with just ONE.

I just wanted to sing on TV.

there comes a time in every rabbi's life when he thinks he's Moses.

For God to reveal His Son in us is not the result of research or searching; it is entirely a matter of mercy and revelation. It is an inward seeing, an inner knowing.

One of the most important lessons that experience teaches is that, on the whole, success depends more upon character than upon either intellect or fortune.