Old paint on canvas, as it ages, sometimes becomes transparent. When that happens it is possible, in some pictures, to see the original lines: a tree will show through a woman's dress, a child makes way for a dog, a large boat is no longer on an open sea. That is called pentimento because the painter 'repented,' changed his mind. Perhaps it would be as well to say that the old conception, replaced by a later choice, is a way of seeing and then seeing again.

我努力通过我的工作和行动成为世界上的积极力量。

做出伟大工作的唯一方法是热爱你所做的事。

The total amount of suffering per year in the natural world is beyond all decent contemplation.

家庭是一个生产人力资本的小工厂。

复杂很容易，简单却很难。