The most important part of teaching is to teach what it is to know.
The most savage controversies are those about matters as to which there is no good evidence either way.
Courage, conviction and confidence.
He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Any sufficiently advanced technology is indistinguishable from magic.
All stable processes we shall predict. All unstable processes we shall control.
Reading without reflecting is like eating without digesting.
The direction in which education starts a man will determine his future in life
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
Reading is to the mind what exercise is to the body.
To every action there is always an equal and opposite or contrary, reaction
There is no authority who decides what is a good idea.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
Real learning comes about when the competitive spirit has ceased.
A witty saying proves nothing.
To educate a person in the mind but not in morals is to educate a menace to society.
I cannot live without books.