Opinion is the medium between knowledge and ignorance.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Reading is to the mind what exercise is to the body.

All stable processes we shall predict. All unstable processes we shall control.

Necessity is the mother of invention.

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

Education is the most powerful weapon which you can use to change the world.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

Don't learn to do, but learn in doing.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

A child miseducated is a child lost.

We could never learn to be brave and patient, if there were only joy in the world

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

Common sense is the collection of prejudices acquired by age eighteen.

Science is not only a disciple of reason but, also, one of romance and passion.

I cannot teach anybody anything. I can only make them think

The knowledge of all things is possible

The only true wisdom is in knowing you know nothing.