I always cheer up immensely if an attack is particularly wounding because I think, well, if they attack one personally, it means they have not a single political argument left.

In the realm of algorithms, efficiency is not merely a measure of speed, but a profound statement about the nature of the problem itself.

If you borrow something， try to return it in better shape than you received it. Clean it， sharpen it， fill it up.

The quality of light is the quality of space.