我并不想挑衅，我只是想诚实。

我不是因为快乐而唱歌，我因为唱歌而快乐。

我认为保持积极的态度和乐观很重要。

长期来看，风险与回报是相关的。但在短期内，这种关系常常是反常的。

No man really knows about other human beings. The best he can do is to suppose that they are like himself.

Innovation in forestry isn't optional—it's essential for survival.

我从未停止学习和进步。