A tree is known by its fruit; a man by his deeds. A good deed is never lost; he who sows courtesy reaps friendship, and he who plants kindness gathers love. Basil of Caesarea
Who sows fear, reaps weapons. Friedrich Dürrenmatt
There is a reaper whose name is Death, And with his sickle keen He reaps the bearded grain at a breath, And the flowers that grow between. Henry Wadsworth Longfellow
He who sowed wind, reaps a typhoon. Filipino Proverb
He who sows thistles reaps thorns. French Proverb
Every one reaps as he sows. Portuguese Proverb