劳动可以使我们摆脱三大灾祸:寂寞恶习贫困。
创造高效和选择性催化剂的挑战让我每天都充满动力。
The historian must have some kinship with his subject. The dead will not speak unless they are properly addressed.
写作是一种思考的方式,是一种解决问题的方式。