The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.

The wild is a place of danger. To survive, you have to respect it.

Efficiency is highly overrated； Goofing off is highly underrated. Regularly scheduled sabbaths， sabbaticals， vacations， breaks， aimless walks and time off are essential for top performance of any kind. The best work ethic requires a good rest ethic.

The Langlands program is a framework for exploring the deepest questions in mathematics.

最严重的罪行不是以邪恶的名义犯下的，而是以善的名义犯下的。

Happiness is a state of mind. It's just according to the way you look at things.