Only a life lived for others is worth living.
The only way to escape the personal corruption of praise is to go on working.
Peace cannot be kept by force; it can only be achieved by understanding.
The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it.
When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive thinking.
Great spirits have always encountered violent opposition from mediocre minds.
Nothing that I can do will change the structure of the universe. But maybe, by raising my voice I can help the greatest of all causes - goodwill among men and peace on earth.
If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed.
What I see in Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of humility. This is a genuinely religious feeling that has nothing to do with mysticism.
Don't listen to their words, fix your attention on their deeds.
My pacifism is an instinctive feeling, a feeling that possesses me because the murder of men is disgusting. My attitude is not derived from any intellectual theory but is based on my deepest antipathy to every kind of cruelty and hatred.
Perfection of means and confusion of goals seem - in my opinion - to characterize our age.
A man's value to the community primarily depends on how far his feelings, thoughts, and actions are directed towards promoting the good of his fellows.
It is the supreme art of the teacher to awaken joy in creative expression and knowledge.
Intellectuals solve problems; geniuses prevent them.