Man can learn nothing except by going from the known to the unknown.

Observation is a passive science, experimentation an active science.

Man can learn nothing except by going from the known to the unknown.

In teaching man, experimental science results in lessening his pride more and more by proving to him every day that primary causes, like the objective reality of things, will be hidden from him forever and that he can only know relations.

The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.

Put off your imagination, as you put off your overcoat, when you enter the laboratory. Put it on again, as you put on your overcoat, when you leave.

Mediocre men often have the most acquired knowledge.

Experimentation is an active science.

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

Art is I; science is we.

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.

Science does not permit exceptions.

The investigator should have a robust faith - and yet not believe.

The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to the environment surrounding them.

We must alter theory to adapt it to nature, but not nature to adapt it to theory.

Roosevelt's magic lay in one facet of his personality: He knew how to take the risk. No other man in public life I knew could so readily take the challenge of the new.

Man was born free, and he is everywhere in chains.

Photography is a major force in explaining man to man.

The world is... the natural setting of, and field for, all my thoughts and all my explicit perceptions. Truth does not inhabit only the inner man, or more accurately, there is no inner man, man is in the world, and only in the world does he know himself.

I am neither a child, a young man, nor an ancient; nor am I of any caste.

I want the municipality to be a helping hand to the man with a desire of sympathy, to help the fallen when it is not in their power to help themselves.

I always looked for a man to rescue me and bring me happiness. I bought into that myth, of course, and looked for my own Prince Charming.

A desire to be observed, considered, esteemed, praised, beloved, and admired by his fellows is one of the earliest as well as the keenest dispositions discovered in the heart of man.

Nonviolence is a powerful and just weapon. which cuts without wounding and ennobles the man who wields it. It is a sword that heals.

Let me first state that I believe that marriage is a sacred union between one man and one woman.

A man must be strong in that profession, he must have vigor of body and mind, yet I am all out of breath if I walk up a hill; I have not the heart to crush even a fly.

An intelligent man is sometimes forced to be drunk to spend time with his fools.

I believe that if a man does a job as well as a woman, he should be paid as much.

For a man to strike any women is most brutal, and I, as well as everyone else, think this far worse than any attempt to shoot, which, wicked as it is, is at least more comprehensible and more courageous.

There is always a type of man who says he loves his fellow men, and expects to make a living at it.

A man may be in as just possession of truth as of a city, and yet be forced to surrender.

The bravest sight in the world is to see a great man struggling against adversity.

If a man is dumb, someone is going to get the best of him, so why not you? If you don't, you're as dumb as he is.

Happy the man who has been able to learn the causes of things.

Work is not man's punishment. It is his reward and his strength and his pleasure.

'Thou shalt not get found out' is not one of God's commandments; and no man can be saved by trying to keep it.

Sex is the most beautiful thing that can take place between a happily married man and his secretary.

Man has done a lot to make himself dangerous and animals get the worst of all of it. But then, man too is an animal.

A writer may tell me that he thinks man will ultimately become an ostrich. I cannot properly contradict him.

I think I had a more European outlook about the body and sex. The body is in no way dirty, and sex is something beautiful to give to and share with a lover. It has nothing to do with promiscuity, because I only believe in being in love with one man at a time.

A woman who thinks she is intelligent demands the same rights as man. An intelligent woman gives up.

What makes my approach special is that I do different things. I do jazz, blues, country music and so forth. I do them all, like a good utility man.

Once made equal to man, woman becomes his superior.

One of the greatest discoveries a man makes, one of his great surprises, is to find he can do what he was afraid he couldn't do.

The history of Christianity, therefore, must be of concern to all who are interested in the record of man and particularly to all who seek to understand the contemporary human scene.

Nothing is harder to direct than a man in prosperity; nothing more easily managed that one is adversity.

Many a man is praised for his reserve and so-called shyness when he is simply too proud to risk making a fool of himself.

That friend a great man's ruin strongly checks, who rails into his belief all his defects.