It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
The fullness of knowledge only comes through the awareness of ignorance.
Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
A little knowledge is a dangerous thing. So is a lot.
Know what you are talking about.
Human behavior flows from three main sources: desire, emotion, and knowledge
The schools ain't what they used to be and never was.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
The most important part of teaching is to teach what it is to know.
Don't learn to do, but learn in doing.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
The only good is knowledge and the only evil is ignorance.
The task of a writer is not to solve the problem but to state the problem correctly.
In mathematics you don't understand things. You just get used to them.
The first idea the child must acquire is that of the difference between good and evil.
There is nothing more awful, insulting, and depressing than banality.
A witty saying proves nothing.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
Science is what we have learned about how to keep from fooling ourselves.