Man's main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality.

即使在最黑暗的时刻，只要记得点亮灯光，就能找到幸福。

It is not death that a man should fear, but he should fear never beginning to live.

可持续性不仅是一种趋势，更是一种责任。