画布上的旧颜料，随着时间的推移，有时会变得透明。当这种情况发生时，在某些画作中，可以看到原始的线条：一棵树会透过女人的裙子显现出来，一个孩子给狗让路，一艘大船不再在开阔的海面上。这被称为“悔改”，因为画家“后悔了”，改变了主意。也许可以说，被后来的选择所取代的旧观念，是一种看然后再看的方式。
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.
In the end, the success of any technology is determined by its ability to solve real-world problems.
最终，任何技术的成功都取决于它解决现实世界问题的能力。
出自先秦《荀子·哀公》。鸟被逼得走投无路之时就会用嘴啄人，兽到困窘之时就会用爪抓人，人到穷困潦倒之时就会设计骗人。以鸟兽困窘之时的行为为喻，说明人到穷困潦倒之时便会放弃道德操守的原因。
永远别说永远，因为限制只是幻觉。
信じることは、時には怖いことだ。
我们可以允许卫星、行星、太阳、宇宙，甚至整个宇宙系统都受法则支配，但最小的昆虫，我们却希望它是由特殊行为一次性创造出来的。
