Of all thieves, fools are the worst; they rob you of time and temper.

There is nothing so terrible as activity without insight.

When you are in conflict with someone, there is one factor that can make the difference between damaging your relationship and deepening it. That factor is attitude. We don't get to know people when they come to us; we must go to them to find out what they are like.

Art is long, life is short; judgement difficult, opportunity transient.

We must always change, renew, rejuvenate ourselves; otherwise, we harden.

Wer fremde Sprachen nicht kennt, weiss nichts von seiner eigenen.He who is ignorant of foreign languages, knows not his own.

Alas! sorrow from happiness is oft evolved.