Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
The highest result of education is tolerance.
An investment in knowledge pays the best interest.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Science is what we have learned about how to keep from fooling ourselves.
The task of a writer is not to solve the problem but to state the problem correctly.
The whole of science is nothing more than a refinement of everyday thinking.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
Dare to think for yourself.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
The real solution lies in a world in which charity will have become unnecessary.
All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
All stable processes we shall predict. All unstable processes we shall control.
Investigate, educate and organize.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
The first idea the child must acquire is that of the difference between good and evil.
One test of the correctness of educational procedure is the happiness of the child.
Seek knowledge from the cradle to the grave.