The tragedy of the world is that those who are imaginative have but slight experience, and those who are experienced have feeble imaginations.
No religion can be considered in abstraction from its followers, or even from its various types of followers.
The importance of an individual thinker owes something to chance. For it depends upon the fate of his ideas in the minds of his successors.
From the very beginning of his education, the child should experience the joy of discovery.
What is morality in any given time or place? It is what the majority then and there happen to like and immorality is what they dislike.
Fertilization of the soul is the reason for the necessity of art.
Life is complex in its expression, involving more than percipience, namely desire, emotion, will, and feeling.
Routine is the god of every social system; it is the seventh heaven of business, the essential component in the success of every factory, the ideal of every statesman. The social machine should run like clockwork.
Religion is the last refuge of human savagery.
The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato.
There is no more common error than to assume that, because prolonged and accurate mathematical calculations have been made, the application of the result to some fact of nature is absolutely certain.
Ideas won't keep. Something must be done about them.
The absolute pacifist is a bad citizen; times come when force must be used to uphold right, justice and ideals.
I am also greatly indebted to Bergson, William James, and John Dewey. One of my preoccupations has been to rescue their type of thought from the charge of anti-intellectualism, which rightly or wrongly has been associated with it.
I put forward as a general definition of civilization, that a civilized society is exhibiting the five qualities of Truth, Beauty, Adventure, Art, Peace.
Nobody has a right to speak more clearly than he thinks.
Without adventure civilization is in full decay.
Learning preserves the errors of the past as well as its wisdom.
Philosophy is the product of wonder.
Wisdom alone is true ambition's aim, wisdom is the source of virtue and of fame; obtained with labour, for mankind employed, and then, when most you share it, best enjoyed.
The guiding motto in the life of every natural philosopher should be, seek simplicity and distrust it.
The future belongs to those who can rise above the confines of the earth.
The factor in human life provocative of a noble discontent is the gradual emergence of a sense of criticism, founded upon appreciation of beauty, and of intellectual distinction, and of duty.
Scientists animated by the purpose of proving that they are purposeless constitute an interesting subject for study.
Knowledge keeps no better than fish.
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