The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

永远不要满足于当前的成就，要不断追求更高目标。

成功不是终点，失败也非末日，最重要的是继续前进的勇气。

"The only way to make sense out of change is to plunge into it, move with it, and join the dance."

Our descendants will achieve things that will amaze us， yet a portion of what they will create could have been made with today’s materials and tools if we had had the imagination. Think bigger.