Meditations, Book II, Section 10

Meditations, Book II, Section 10:

It is the part of a man endowed with a good understanding faculty, to consider what they themselves are in very deed, from whose bare conceits and voices, honour and credit do proceed: as also what it is to die, and how if a man shall consider this by itself alone, to die, and separate from it in his mind all those things which with it usually represent themselves unto us, he can conceive of it no otherwise, than as of a work of nature, and he that fears any work of nature, is a very child. Now death, it is not only a work of nature, but also conducing to nature.