我不喜欢欠下人情，这样会压逼著我，令我觉得自己是个奴隶。我宁愿自己处理自己的事，不用依靠别人，能够完全独立。

The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.

One often calms one's grief by recounting it.

学习的速度决定数字经济增长的速度。