心灵的能量是生命的本质。
可持续性不仅仅是一种趋势,更是我们对后代的责任。
Joy is the emotion which accompanies the fulfillment of our natures when we have lived up to our potential.
生活是世界上最罕见的事情。大多数人只是存在,仅此而已。
数学中发现的快乐是无与伦比的。
The only source of knowledge is experience.