We know nothing in reality; for truth lies in an abyss.
More men have become great through practice than by nature.
Men should strive to think much and know little.
Nature and education are somewhat similar. The latter transforms man, and in so doing creates a second nature.
The pride of youth is in strength and beauty, the pride of old age is in discretion.
Happiness resides not in possessions, and not in gold, happiness dwells in the soul.