Never do anything when you are in a temper, for you will do everything wrong. - Baltasar Gracián

There is always time to add a word, never to withdraw one.

Audacious persons hope to make themselves eternally famous by setting fire to one of the wonders of the world and of the ages. The art of reproving scandal is to take no notice of it, to combat it damages our own case; even if credited it causes discredit, and is a source of satisfaction to our opponent, for this shadow of a stain dulls the lustre of our fame even if it cannot altogether deaden it.

Because the ignorant do not know themselves, they never know for what they are lacking. Some would be sages if they did not believe they were so already.