量子力学的美在于它能够描述最小尺度下粒子的行为，即使它违背了我们的经典直觉。

There is no point treating a depressed person as though she were just feeling sad, saying, 'There now, hang on, you'll get over it.' Sadness is more or less like a head cold- with patience, it passes. Depression is like cancer.

"Theoretical computer science is a field where deep mathematical insights lead to practical computational tools."