Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
Science is what we have learned about how to keep from fooling ourselves.
Knowledge, Action, Devotion are complementary to each other.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
Opinion is the medium between knowledge and ignorance.
The most savage controversies are those about matters as to which there is no good evidence either way.
The schools ain't what they used to be and never was.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
The most important part of teaching is to teach what it is to know.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
No man's knowledge here can go beyond his experience.
The task of a writer is not to solve the problem but to state the problem correctly.
Necessity is the mother of invention.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
An investment in knowledge pays the best interest.
Learning never exhausts the mind.
Don't worry that children never listen to you; worry that they are always watching you.
Education is the most powerful weapon which you can use to change the world.