One who never turned his back but marched breast forward, never doubted clouds would break.
可持续性不仅仅是植树,而是在正确的地方种植正确的树木,并确保它们世代繁茂。
Philosophy ought really to be written only as a form of poetry.
我是个斗士,我相信积极和努力的力量。
The unexamined life is not worth living.