"The only limit to our realization of tomorrow will be our doubts of today."

The key to success is to keep growing in all areas of life - mental, emotional, spiritual, as well as physical.

人生中最美好的时刻，不是那些被动、接受、放松的时光……最美好的时刻通常发生在一个人自愿努力去完成一项艰难而有价值的事情时，身体或心灵被拉伸到极限的时候。

在地球系统的伟大运作中，现在的力量与古代相同。

领导者必须有勇气为长期利益做出艰难的决定，即使这些决定在短期内不受欢迎。

The best solutions often come from listening—to nature, to science, and to the people on the ground.