The ability to observe without evaluating is the highest form of intelligence.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

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

The direction in which education starts a man will determine his future in life

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

Any sufficiently advanced technology is indistinguishable from magic.

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

A child educated only at school is an uneducated child.

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

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

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

The knowledge of all things is possible

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

Learning never exhausts the mind.

To every action there is always an equal and opposite or contrary, reaction

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

Better know nothing than half-know many things.

The more I read, the more I acquire, the more certain I am that I know nothing.