If the facts don't fit the theory, change the facts.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
Education is the kindling of a flame, not the filling of a vessel.
A witty saying proves nothing.
Dare to think for yourself.
Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
Real knowledge is to know the extent of one's ignorance.
No power and no treasure can outweigh the extension of our knowledge.
Science is not only a disciple of reason but, also, one of romance and passion.
To educate a person in the mind but not in morals is to educate a menace to society.
All stable processes we shall predict. All unstable processes we shall control.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Common sense is the collection of prejudices acquired by age eighteen.
Show me a family of readers, and I will show you the people who move the world.
I am indebted to my father for living, but to my teacher for living well.
Imagination is more important than knowledge.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
Courage, conviction and confidence.
