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A moral being is one who is capable of reflecting on his past actions and their motives.
"The major threats to survival that our ancestors faced - predators, starvation, disease - left their mark on our fears and anxieties."
在理论物理学的领域里,每一个发现都会带来新的问题和挑战。
我不想成为一个象征,我想做我自己。