投资者应避免试图把握市场时机；这是一个失败的战略。

Responsible forestry is not a choice, it's an obligation for all of us.《Forests of Tomorrow》

Learning consists in the modification of certain mediating processes which operate between the stimulus and the response.

仅靠市场无法解决所有发展挑战，我们还需要明智的干预措施。