Any power must be an enemy of mankind which enslaves the individual by power and by force, whether it arises under the Fascist or the Communist flag. All that is valuable in human society depends upon the opportunity for development accorded to the individual.
By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right implies also a duty; one must not conceal any part of what one has recognized to be true.
Everything should be made as simple as possible, but not simpler.
Few people are capable of expressing with equanimity opinions that differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence.
I have never looked upon ease and happiness as ends in themselves - such an ethical basis I call more proper for a herd of swine. The ideals which have lighted me on my way and time after time given me new courage to face life cheerfully, have been Truth, Goodness, and Beauty.
Never do anything against conscience even if the state demands it.
The prestige of government has undoubtedly been lowered considerably by the Prohibition law. For nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced. It is an open secret that the dangerous increase of crime in this country is closely connected with this.
The strength of the constitution lies entirely in the determination of each citizen to defend it. Only if every single citizen feels duty bound to do his share in this defense are constitutional rights secure.
The world that we have made as a result of the level of thinking that we have done so far, has created problems we cannot solve at the level of thinking at which we created them.
Today's problems cannot be solved by thinking the way we thought when we created them.
Try not to become a man of success but rather try to become a man of value.
Unthinking respect for authority is the greatest enemy of truth.
Great spirits have always encountered violent opposition from mediocre minds.
The ruling class has the schools and press under its thumb. This enables it to sway the emotions of the masses.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
The restriction of knowledge to an elite group destroys the spirit of the society and leads to its intellectual impoverishment.
Laws alone cannot secure freedom of expression; in order that every man present his views without penalty there must be a spirit of tolerance in the entire population.
The important thing is never to stop questioning.
The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.