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.

我不相信运气。我相信准备遇到机会。

Progress is not inevitable; it is the result of deliberate choices and actions.

理论物理学的美在于它能够揭示支配宇宙的隐藏对称性和模式。

I do not like proper novels. In proper novels people say things like, ‘I am veined with iron, with silver and with streaks of common mud. I cannot contract into the firm fist which those clench who do not depend on stimulus.’ What does this mean? I do not know. Nor does Father. Nor do the people who write these books.

医学的艺术在于在自然治愈疾病时逗乐病人。