生产力的提高是社会进步的动力。

I don’t believe in perfect performances, only honest ones.

Every child should have mud pies, grasshoppers, water bugs, tadpoles, frogs, mud turtles, elderberries, wild strawberries, acorns, chestnuts, trees to climb, brooks to wade in, water lilies, woodchucks, bats, bees, butterflies, various animals to pet, hayfields, pine-cones, rocks to roll, sand, snakes, huckleberries and hornets; and any child who has been deprived of these has been deprived of the best part of education.

A writer is a person who is not satisfied with the world as it is, who wants to change it, to improve it, to make it more beautiful, more just, more livable.

成为不朽者最难的部分是看着所有你爱的人死去。

作为一个有创造力的人，最危险的想法就是认为自己知道自己在做什么。