In order to stave off covetouness, greed, and spite, citizens world over must be educated.
Study without desire spoils the memory, and it retains nothing that it takes in.
What sculpture is to a block of marble, education is to a human soul.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
You can never learn less, you can only learn more.
Science is a way of thinking much more than it is a body of knowledge.
The task of a writer is not to solve the problem but to state the problem correctly.
Knowing is not enough; we must apply. Willing is not enough; we must do.
The first principle is that you must not fool yourself and you are the easiest person to fool.
Investigate, educate and organize.
There is nothing more awful, insulting, and depressing than banality.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
Know what you are talking about.
The only true wisdom is in knowing you know nothing.
All stable processes we shall predict. All unstable processes we shall control.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
Industrialize or perish.
In mathematics you don't understand things. You just get used to them.
Necessity is the mother of invention.
Show me a family of readers, and I will show you the people who move the world.