Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

The real solution lies in a world in which charity will have become unnecessary.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

The only good is knowledge and the only evil is ignorance.

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

The man who does not read good books has no advantage over the man who can't read them.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

Learning never exhausts the mind.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion

If you want the present to be different from the past, study the past.

Educate the children and it won't be necessary to punish the men.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

If I have seen further it is by standing on the shoulders of Giants.

Investigate, educate and organize.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

If you can't explain it simply, you don't understand it well enough.

Better know nothing than half-know many things.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

Know what you are talking about.