He who could foresee affairs three days in advance would be rich for thousands of years

Similar sayings:

The emperor is rich, but he cannot buy one extra year The emperor is rich, but he cannot buy one extra year
Hold back some goods for a thousand days and you will be sure to sell at a profit Hold back some goods for a thousand days and you will be sure to sell at a profit
Rich men accumulate money; the poor accumulate years Rich men accumulate money; the poor accumulate years
O man, you who do not live a hundred years, why fret a thousand minutes? O man, you who do not live a hundred years, why fret a thousand minutes?
Plan your year in the spring, your day at dawn Plan your year in the spring, your day at dawn

Chinese sayings and proverbs