The gods have placed sweat as the price of all things.
Notes from Wikiquote
But in front of excellence the immortal gods have put sweat
He harms himself who does harm to another, and the evil plan is most harmful to the planner.
Observe due measure, for right timing is in all things the most important factor.
For a man wins nothing better than a good wife, and, again, nothing worse than a bad one.
Quote text and notes from Wikiquote: Hesiod (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.