The only limit to our realization of tomorrow will be our doubts of today.
质量从来不是偶然的,它始终是智慧努力的结果。
我们想要的未来必须被发明出来,否则我们将得到一个我们不想要的未来。
这个理存在于宇宙间,本来就不因为人的明白不明白、实行不实行而有所增减。
Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.