因果关系的阶梯有三个梯级：观察、行动和想象。

I went to the woods because I wished to live deliberately. I wanted to live deep and suck out all the marrow of life, to put to rout all that was not life.

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。

人类最真实可触的便是孤独中的沉默。

The key to successful investing is to have a long-term perspective and a disciplined approach.

The world is a great mirror, and we are the reflections.

释义：仔细观察时局的变化，顺应形势的发展并加以引导。这句话强调要善于把握时机，灵活应对变化。