Although it is a gloomy view to suppose that life will die out, sometimes when I contemplate the things that people do with their lives I think it is almost a consolation

Who ever heard a theologian preface his creed, or a politician conclude his speech with an estimate of the probable error of his opinion?

We need a science to save us from science.

If one lived for ever the joys of life would inevitably in the end lose their savour. As it is, they remain perennially fresh.

The experience of overcoming fear is extraordinarily delightful.

Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones.

All the labor of all the ages, all the devotion, all the inspiration, all the noonday brightness of human genius are destined to extinction. So now, my friends, if that is true, and it is true, what is the point?