You can't think your way through life. You have to live your way through it.

The psychologist must study the mind without presuppositions.

不要担心你在数学上遇到的困难；我敢保证我遇到的困难比你还大得多。

解读：有些人计较日常琐碎得失，却在人生关键抉择、长远规划上短视，因小失大，警示目光放长远，莫因小利误大局。