地球上生命的未来取决于我们采取行动的能力。许多人正在尽其所能，但只有我们的社会、经济和政治发生变化，才能取得真正的成功。
The future of life on Earth depends on our ability to take action. Many individuals are doing what they can, but real success can only come if there is a change in our societies and our economics and in our politics.
领导力在于因你的存在而使他人变得更好，并确保这种影响在你离开后依然持续。
与同伴保持良好的关系的愿望，即所谓的人类联合本能，轻易地超过了单纯的个人利益和理性逻辑。
The only meaningful way to study learning is through objective measurement.
To read is to travel without moving.