He who refuses to do arithmetic is doomed to talk nonsense.

译文：追求美好德行的人不会附和世俗，要建立非凡功业的人不会将自己事业让别人来决定。

The future isn't written in the stars. There are no guarantees. So claim your adulthood. Be intentional. Get to work. Pick your family. Do the math. Make your own certainty. Don't be defined by what you didn't know or didn't do. You are deciding your life right now.

永远不要以貌取人。

Old minds are like old horses; you must exercise them if you wish to keep them in working order.

解读：仅怀着善良动机远远不够，若缺乏理性思考与科学规划，盲目推行一些举措，哪怕初心美好，也可能引发灾难性后果，警示做事要考量手段与实际效果。