Convictions are more dangerous enemies of truth than lies. Courageous, untroubled, mocking and violent-that is what Wisdom wants us to be. Wisdom is a woman, and loves only a warrior.
Two of my favorites, not sure if they count as proverbs though
Savour the fruit of life, my young friends. It has a sweet taste when it is fresh from the vine. But don't live too long. The taste turns bitter... after a time
You don't try to build a wall, you don't start there you say I'm going to lay this brick as perfectly as a brick could possibly be made and if you do that every single day soon you will have a wall