The most perfect character is supposed to lie between those extremes; retaining an equal ability and taste for books, company, and business; preservi… - John Locke

Hence it comes to pass, that a man, who is very sober, and of right understanding in all other things, may in one particular be as frantic, as any in Bedlam; if either by any sudden very strong impression, or long fixing his fancy upon one sort of thoughts, incoherent ideas have been cemented together so powerfully, as to remain united. But there are degrees of madness, as of folly; the disorderly jumbling ideas together, is in some more, and some less. In short, herein seems to lie the difference between idiots and madmen, That madmen put wrong ideas together, and so make wrong propositions, but argue and reason right from them: but idiots make very few or no propositions, and reason scarce at all.

There is no virtue they should be excited to, nor fault they should be kept from, which I do not think they may be convinced of; but it must be by such reasons as their age and understandings are capable of, and those propos'd always in very few and plain words.

The most precious of all possessions is power over ourselves.