Life is very persistent and very ingenious in seizing every opportunity.

Nothing is too great or too good to be true. Do not believe that we can imagine things better than they are. In the long run, in the ultimate outlook, in the eye of the Creator, the possibilities of existence, the possibilities open to us, are beyond our imagination.

In the long run our boasted control of nature is a delusion.

Being the inventor of sex would seem to be a sufficient distinction for a creature just barely large enough to be seen by the naked eye.

Life is very persistent and very ingenious in seizing every opportunity.

Though we face the facts of sex we are more reluctant than ever to face the fact of death or the crueler facts of life, either biological or social.

Technology made large populations possible; large populations now make technology indispensable.