If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
What we know is a drop, what we don't know is an ocean.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
I cannot live without books.
The first principle is that you must not fool yourself and you are the easiest person to fool.
A thought is an idea in transit.
The progressive development of man is vitally dependent on invention.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
The deepest sin against the human mind is to believe things without evidence.
I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.
Real learning comes about when the competitive spirit has ceased.
Necessity is the mother of invention.
All stable processes we shall predict. All unstable processes we shall control.
The whole of science is nothing more than a refinement of everyday thinking.
We could never learn to be brave and patient, if there were only joy in the world
Education is an ornament for the prosperous, a refuge for the unfortunate.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
If you want the present to be different from the past, study the past.
Science is not only a disciple of reason but, also, one of romance and passion.
I am a part of everything that I have read.