Insanity in individuals is something rare - but in groups, parties, nations and epochs, it is the rule.
Friedrich Nietzsche
For a life that is sound and secure, cultivate a thorough insight into things and discover their essence, matter, and cause; put your whole heart into doing what is just, and speaking what is true; and for the rest, know the joy of life by piling good deed on good deed until no rift or cranny appears between them.
deism.com
As irrigators lead water where they want, as archers make their arrows straight, as carpenters carve wood, the wise shape their minds.
The Buddha