In man, the things which are not measurable are more important than those which are measurable.

Comforts and syphilis are the greatest enemies of mankind.

All great men are gifted with intuition. They know without reasoning or analysis, what they need to know.

The love of beauty in its multiple forms is the noblest gift of the human cerebrum.

Everyone makes a greater effort to hurt other people than to help himself.

The most efficient way to live reasonably is every morning to make a plan of one's day and every night to examine the results obtained.

A few observation and much reasoning lead to error; many observations and a little reasoning to truth.

Life leaps like a geyser for those who drill through the rock of inertia.

Religion brings to man an inner strength, spiritual light, and ineffable peace.

Like hatred, jealousy is forbidden by the laws of life because it is essentially destructive.

Those who desire to rise as high as our human condition allows, must renounce intellectual pride, the omnipotence of clear thinking, belief in the absolute power of logic.

To what extent is any given man morally responsible for any given act? We do not know.

The atmosphere of libraries, lecture rooms and laboratories is dangerous to those who shut themselves up in them too long. It separates us from reality like a fog.

Man cannot remake himself without suffering, for he is both the marble and the sculptor.

All of us, at certain moments of our lives, need to take advice and to receive help from other people.

The first duty of society is to give each of its members the possibility of fulfilling his destiny. When it becomes incapable of performing this duty it must be transformed.

Science has to be understood in its broadest sense, as a method for comprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.

In man, the things which are not measurable are more important than those which are measurable.

Intuition comes very close to clairvoyance; it appears to be the extrasensory perception of reality.

Hard conditions of life are indispensable to bringing out the best in human personality.

The quality of life is more important than life itself.

Gigantic sums are now required to maintain prisons and insane asylums and protect the public against gangsters and lunatics. Why do we preserve these useless and harmful beings? The abnormal prevent development of the normal.

Perhaps I will stay in Chicago and operate on human beings instead of on dogs. From a business standpoint, it would be excellent. But, as I hate medical practice, I would like better to make little money in doing scientific work than a great deal in doing surgical operations.

The Asiatics and the Africans, such as the Russians, the Arabs, the Hindus, are increasing with marked rapidity. Never have the European races been in such great peril as today.

The German government has taken energetic measures against the propagation of the defective, the mentally diseased, and the criminal.

The difficulty of finding organs suitable for transplantation on man must be met.

The most efficient way to live reasonably is every morning to make a plan of ones day and every night to examine the results obtained.

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.