凡事天下要考察有无的原则,必定是以众人的耳目所见所闻的实情以知有与无来作为标准的。 
In philosophy, the winner of the race is the one who gets there last.
我越是坚定地作为我自己存在于时代的条件中,我就越清晰地听到永恒的声音。
Democracy must be born anew every generation, and education is its midwife.
生活就像过山车,活在当下,快乐,享受生活。
可持续性不是一种趋势;这是我们对后代的责任。