没有永恒的事实，就像没有绝对的真理一样。

生活中唯一的限制是你自己设定的。

今天的美好时光，就是明天的悲伤回忆。

Often it is the means that justify the ends: Goals advance technique and technique survives even when goal structures crumble.

Sustainable practices aren't just good for the planet; they're good for business in the long run.