时间是那些只有智慧作为财富的人的唯一资本。

There can be no permanent progress in the battle against hunger until the agencies that fight for increased food production and those that fight for population control unite in a common effort.

Patience is key in observational astronomy—some discoveries take decades to confirm.

如果我们想为子孙后代提供粮食，可持续农业是唯一的前进方向。