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The true sign of intelligence is not knowledge but imagination.
Intellectual growth should commence at birth and cease only at death.
I never teach my pupils; I only attempt to provide the conditions in which they can learn.
It is the supreme art of the teacher to awaken joy in creative expression and knowledge.
The only thing that interferes with my learning is my education.
Education is what remains after one has forgotten what one has learned in school.
The only source of knowledge is experience.