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.
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.
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.
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.
Comforts and syphilis are the greatest enemies of mankind.
The German government has taken energetic measures against the propagation of the defective, the mentally diseased, and the criminal.
Life leaps like a geyser for those who drill through the rock of inertia.
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.
Like hatred, jealousy is forbidden by the laws of life because it is essentially destructive.
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.
Hard conditions of life are indispensable to bringing out the best in human personality.
Religion brings to man an inner strength, spiritual light, and ineffable peace.
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.
Man cannot remake himself without suffering, for he is both the marble and the sculptor.
In man, the things which are not measurable are more important than those which are measurable.
A few observation and much reasoning lead to error; many observations and a little reasoning to truth.
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.
The difficulty of finding organs suitable for transplantation on man must be met.
The quality of life is more important than life itself.
