I believe that man will not merely endure: he will prevail. He is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance.

物理理论的美不仅在于其数学的优雅，还在于其解释和预测现象的能力。

I write to make sense of the world, to give it a shape, a form.