幸福存在于内心。

可持续性不仅仅是种树，而是在正确的地方为了正确的理由种正确的树。

The real tragedy of the poor is that they can afford nothing but self-denial.

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

The most successful companies are those that listen to their customers and evolve with their needs.

环境不仅仅是限制因素，更是文化发展中的创造性力量。