如果使人们喜怒无常，居处不定，思虑不得要领，行事中途就乱了章法；那么，天下间就会出现各种不平与不合理，而后像盗拓或者曾参、史鳅做的那些事情，都会发生。
非经典逻辑的研究不仅是一种学术练习，更是理解复杂系统的必要条件。
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.