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Sustainability is not an option; it's a responsibility we owe to future generations.
可持续性不是一种选择,而是我们对后代的责任。
人は、自分が正しいと思っていることを、他人にも強要する。
Psychology must be a guide to practical living.
I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.