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.

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

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

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

A thought is an idea in transit.

The reading of all good books is like conversation with the finest men of past centuries.

Knowledge becomes evil if the aim be not virtuous.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

I cannot live without books.

When you know better you do better.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

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

Reading without reflecting is like eating without digesting.

Men are born ignorant, not stupid. They are made stupid by education.

Educate the children and it won't be necessary to punish the men.

What is now proved was once only imagined.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

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

It is beyond a doubt that all our knowledge begins with experience.

Know what you are talking about.