一个良好的世界需要知识、善良和勇气;它不需要对过去的后悔,也不需要被无知之人长时间前说过的话所束缚的自由智慧。
为全人类提供食物的战斗已经结束。为未来全人类提供食物的战斗才刚刚开始。
The only thing I can do is to be honest about my uncertainty.
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.