He has not learned the first lesson of life who does not every day surmount a fear.
奖励一个人多年来如此愉快地要求玉米植株解决特定问题并观察其反应,可能看起来不公平。
The future belongs to those who can balance short-term performance with long-term vision.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.