The principal point of cleverness is to know how to value things just as they deserve.

It is a great act of cleverness to be able to conceal one's being clever.

It is great cleverness to known when to conceal one's cleverness

Why can we remember the tiniest detail that has happened to us, and not remember how many times we have told it to the same person.

How is it that we remember the least triviality that happens to us, and yet not remember how often we have recounted it to the same person?

Passion often makes a madman of the cleverest man, and renders the greatest fools clever.