Reading is to the mind what exercise is to the body.
The only true wisdom is in knowing you know nothing.
The deepest sin against the human mind is to believe things without evidence.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
The task of a writer is not to solve the problem but to state the problem correctly.
Education is the ability to listen to almost anything without losing your temper or your self-confidence.
Books are as useful to a stupid person as a mirror is useful to a blind person.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Most people have never learned that one of the main aims in life is to enjoy it.
If the facts don't fit the theory, change the facts.
A child miseducated is a child lost.
You can never be overdressed or overeducated.
In mathematics you don't understand things. You just get used to them.
The fullness of knowledge only comes through the awareness of ignorance.
It is possible to fly without motors, but not without knowledge and skill.
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.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
To every action there is always an equal and opposite or contrary, reaction
The man who does not read good books has no advantage over the man who can't read them.
One test of the correctness of educational procedure is the happiness of the child.