"I write for kids because I was a kid who needed books."

市场在短期内是投票机，在长期内是称重机。

物理学的美丽在于它能够用最深刻的理论解释最简单的现象。

The best leather comes from respecting both the animal and the environment.

I think it's important to give back and help others.

文化唯物主义基于一个简单的前提，即人类社会生活是对地球生存实际问题的回应。

I believe in the power of dreams.

短期来看，市场是一台投票机，但长期来看，它是一台称重机。