The Essays of Arthur Schopenhauer; Counsels and Maxims

in every man, be he never so noble and dignified, there is, in the depth of his nature, a mob of low and vulgar desires which constitute him an animal.

In the case of a misfortune which has already happened and therefore cannot be altered, you should not allow yourself to think that it might have been otherwise; still less, that it might have been avoided by such and such means; for reflections of this kind will only add to your distress and make it intolerable, so that you will become a tormentor to yourself

In making his way through life, a man will find it useful to be ready and able to do two things: to look ahead and to overlook: the one will protect him from loss and injury, the other from disputes and squabbles.