Most vices demand considerable self-sacrifices. There is no greater mistake than to suppose that a vicious life is a life of uninterrupted pleasure. It is a life almost as wearisome and painful -- if strenuously led -- as Christian's in The Pilgrim's Progress.

Everyone belongs to everyone else.

Fortunately, however, birds don't understand pep talks. Not even St. Francis'. Just imagine, he went on, preaching sermons to perfectly good thrushes and goldfinches and chiff-chaffs! What presumption! Why couldn't he have kept his mouth shut and let the birds preach to him?

That we are not much sicker and much madder than we are is due exclusively to that most blessed and blessing of all natural graces, sleep.

One third, more or less, of all the sorrow that the person I think I am must endure is unavoidable. It is the sorrow inherent in the human condition, the price we must pay for being sentient and self-conscious organisms, aspirants to liberation, but subject to the laws of nature and under orders to keep on marching, through irreversible time, through a world wholly indifferent to our well-being, toward decrepitude and the certainty of death. The remaining two thirds of all sorrow is homemade and, so far as the universe is concerned, unnecessary.

Finding bad reasons for what one believes for other bad reasons - that's philosophy.

But the nature of the universe is such that ends can never justify means. On the contrary, the means always determine the end.