I write plays because I have a strong moralistic streak.

The social brain hypothesis suggests that our intelligence evolved to manage our complex social lives.

注释：如果对小的功劳不加以奖赏，那么就难以建立大的功勋；如果对小的怨恨不能宽容赦免，那么大的怨恨就必然会产生。

数学的真正乐趣在于发现的过程，而不仅仅是结果。