For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
To educate a person in the mind but not in morals is to educate a menace to society.
What we know is a drop, what we don't know is an ocean.
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.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
It is what you read when you don't have to that determines what you will be when you can't help it.
The most important part of teaching is to teach what it is to know.
I am a part of everything that I have read.
The first principle is that you must not fool yourself and you are the easiest person to fool.
Men are born ignorant, not stupid. They are made stupid by education.
The progressive development of man is vitally dependent on invention.
Any sufficiently advanced technology is indistinguishable from magic.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
I cannot live without books.
There is no authority who decides what is a good idea.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
I am indebted to my father for living, but to my teacher for living well.
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.
The deepest sin against the human mind is to believe things without evidence.