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
All things must come to the soul from its roots, from where it is planted.
All that I am, or hope to be, I owe to my angel mother.
To support mother and father, to cherish partner and children, and to be engaged in peaceful occupation — this is the greatest blessing.
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.