可持续性不仅仅是一种趋势,更是我们对下一代的责任。
The best mathematics is that which you do not understand at first glance.
The best investment you can make is in yourself.
The individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.