Good advice for understanding women, or the best advice ever written?

"The nobler and more perfect a thing is, the later and slower is it in reaching maturity. Man reaches the maturity of his reasoning and mental faculties scarcely before he is eight-and-twenty; woman when she is eighteen; but hers is reason of very narrow limitations. This is why women remain children all their lives, for they always see only what is near at hand, cling to the present, take the appearance of a thing for reality, and prefer trifling matters to the most important. It is by virtue of man’s reasoning powers that he does not live in the present only, like the brute, but observes and ponders over the past and future; and from this spring discretion, care, and that anxiety which we so frequently notice in people."