The instruction at Edinburgh was altogether by lectures, and these were intolerably dull, with the exception of those on chemistry.

The love for all living creatures is the most noble attribute of man.

A man who dares to waste one hour of time has not discovered the value of life.

The world will not be inherited by the strongest, it will be inherited by those most able to change.

Nothing exists for itself alone, but only in relation to other forms of life

Building a better mousetrap merely results in smarter mice.

A mathematician is a blind man in a dark room looking for a black cat which isn't there.

An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.

It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest.

We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.

What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature!

Don’t wait for a vacation to enjoy life. Start to enjoy it now, today, wherever you are.

It's the unknown that I fear, the bites of memories that still have no connections.

Actually, I was beginning to think that even I should be able to solve .153847 mysteries. It was the 38 part, I suspected, that would be the problem.

When I reach for my pen, nothing is out of reach.

Storms come to teach trees and plants how to dance in the wind.

Unless a capacity for thinking be accompanied by a capacity for action a superior mind exists in torture.

The truth is that I'm never sure how any of my books will be received, and because I can be thin-skinned, I try not to read too many reviews when a book first comes out.

Good women are rare too, none of them have come close

The direction and constancy of the will is what really matters, & intellect & feeling are only important in so far as they contribute to that.

It's good to be the king.