Investigate, educate and organize.
The more I read, the more I acquire, the more certain I am that I know nothing.
Courage, conviction and confidence.
Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.
Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.
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.
A witty saying proves nothing.
Learning never exhausts the mind.
The deepest sin against the human mind is to believe things without evidence.
To educate a person in the mind but not in morals is to educate a menace to society.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
If you can't explain it simply, you don't understand it well enough.
If the facts don't fit the theory, change the facts.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
Knowing is not enough; we must apply. Willing is not enough; we must do.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
A cynic is a man who knows the price of everything, and the value of nothing.
The ability to observe without evaluating is the highest form of intelligence.
Know what you are talking about.
I cannot live without books.