I don't count my sit-ups. I only start counting when it starts hurting.

The will to find meaning is the primary motivational force in man.

制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子，其中一些中子再次有效地产生裂变。

Light is the essence of architecture; it defines spaces and gives them meaning.

我不需要理由去善良。