Investigate, educate and organize.
There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.
Better know nothing than half-know many things.
The schools ain't what they used to be and never was.
A cynic is a man who knows the price of everything, and the value of nothing.
Education is an ornament for the prosperous, a refuge for the unfortunate.
I have no special talents. I am only passionately curious.
The only true wisdom is in knowing you know nothing.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
Any sufficiently advanced technology is indistinguishable from magic.
There is no authority who decides what is a good idea.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
The progressive development of man is vitally dependent on invention.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
In mathematics you don't understand things. You just get used to them.
It is possible to fly without motors, but not without knowledge and skill.
The whole of science is nothing more than a refinement of everyday thinking.
The first idea the child must acquire is that of the difference between good and evil.
The books that the world calls immoral are books that show the world its own shame.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
What is now proved was once only imagined.