Dare to think for yourself.
The first idea the child must acquire is that of the difference between good and evil.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
The secret of life is not enjoyment but education through experience.
Education is a system of imposed ignorance.
When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.
A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.
Know what you are talking about.
What sculpture is to a block of marble, education is to a human soul.
The deepest sin against the human mind is to believe things without evidence.
The real solution lies in a world in which charity will have become unnecessary.
The only true wisdom is in knowing you know nothing.
The books that the world calls immoral are books that show the world its own shame.
Knowing others is wisdom, knowing yourself is Enlightenment.
I cannot teach anybody anything. I can only make them think
Real learning comes about when the competitive spirit has ceased.
The whole of science is nothing more than a refinement of everyday thinking.
He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.
A witty saying proves nothing.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
Books are for people who wish they were somewhere else.
