Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.
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.
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.
Prejudice is a burden that confuses the past, threatens the future and renders the present inaccessible.
All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.