A quote
The archer must know what he is seeking to hit; then he must aim and control the weapon by his skill. Our plans miscarry because they have no aim. When a man does not know what harbour he is making for, no wind is the right wind. Chance must necessarily have great influence over our lives, because we live by chance.
Seneca·Letter 71 — On the Supreme Good (§3)·trans. Gummere