In the end we retain from our studies only that which we practically apply.
— Johann Wolfgang von Goethe
Ethical axioms are found and tested not very differently from the axioms of science. Truth is what stands the test of experience.
I never teach my pupils. I only attempt to provide the conditions in which they can learn.
It is a miracle that curiosity survives formal education.
Laws alone can not secure freedom of expression; in order that every man present his views without penalty there must be spirit of tolerance in the entire population.
Reading, after a certain age, diverts the mind too much from its creative pursuits. Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.
Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.
It is the supreme art of the teacher to awaken joy in creative expression and knowledge.