普通的草木到了秋天就凋零了，只有松柏在秋天，仍郁郁葱葱。点评：南北朝时期刘宋学者刘义庆曾言「蒲柳之姿，望秋而落；松柏之质，凌霜犹茂。」松柏两树皆长青不凋，是志操坚贞的象征。

It’s on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.

思想之流是维持生命的行为之流。

The most important property of a program is whether it accomplishes the intention of its user.

词的雅正与否，在于其内在神韵而非表面形式。