Every mathematical problem has a solution, but not every solution is immediately apparent.

小人办事，处理的原则是私利，合于私利的就看作利，违背私利的就看作害；君子办事，衡量的标准是道义，合于道义的就看作利，违反道义的就看作害。

Sustainability is not an option; it's a necessity for the future of our industry.

有些书如此特别、罕见、属于你，以至于表达对它们的喜爱都像是一种背叛。

改变是生活的本质。愿意放弃现在的你，才能成为可能的你。