现实不仅比我们假设的更奇怪，而且比我们能假设的更奇怪。
Reality is not only stranger than we suppose, but stranger than we can suppose.
The greatest reward in our work is knowing we’ve made a difference.
世界充满痛苦，但艺术可以治愈它。
"In computational learning theory, the challenge is not just to learn, but to understand how learning is possible."