"A man's memory might have only a hundred clear days in it and he has lived thousands."

We need to be vigilant about the security of the Internet.

最好的艺术总是处于品味的边缘。

数学推理可以相当系统地看作是对两种能力的结合运用，我们可以称之为直觉和独创性。

I think it's important to keep challenging yourself, to keep growing.

The past is a foreign country; they do things differently there.