朝、種を蒔け、夜にも手を休めるな。実を結ぶのはあれかこれか　それとも両方なのか、分からないのだから。（コヘレト11:6 新共同訳）

In the morning sow your seed, and at evening withhold not your hand, for you do not know which will prosper, this or that, or whether both alike will be good. (Ecclesiastes 11:6 ESV)