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.

生活就像一首歌，有高潮也有低谷，但每一段都是珍贵的。

领导力就是在没有人愿意的时候做出艰难的决定。

译文：用责备外人的心态责备自己，用宽恕自己的心态宽恕别人。赏析：严于律己，宽以待人。严格要求自己才能服众，宽恕别人就会赢得他人的尊重。

The realization of a practical quantum computer will require breakthroughs in both hardware and software.