A manifesto, a diary, a crumpled suicide note, and a still relevant love letter.
It is commonly said that ridicule is the best test of truth; for that it will not stick where it is not just. I deny it. A truth learned in a certain light, and attacked in certain words, by men of wit and humor, may, and often doth, become ridiculous, at least so far, that the truth is only remembered and repeated for the sake of the ridicule.
The world can doubtless never be well known by theory: practice is absolutely necessary; but surely it is of great use to a young man, before he sets out for that country, full of mazes, windings, and turnings, to have at least a general map of it, made by some experienced traveler.