Nothing before had ever made me thoroughly realise, though I had read various scientific books, that science consists in grouping facts so that general laws or conclusions may be drawn from them.

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!

I would not want a husband who valued my appearance more than my wit.

As a consequence [of a closed economic circle], in 1912 there was not a single Irishman who sat on a single board of a major Boston bank.

Space is really big-REALLY big.

I do not paint what I see, but what I saw.

While we can prove that almost all numbers in the continuum are random, we cannot prove that any specific number is indeed random.

I think enthusiasm is the answer to passionate writing.

I have no baggage in politics. I've never been a politician. I don't owe anybody anything.

One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall.

Every action is either strong or weak, and when every action is strong we are successful.

If thou canst not make thyself such an one as thou wouldst, how canst thou expect to have another in all things to thy liking?