對心靈的研究必須是純粹分析性的。
The study of the mind must be purely analytical.
True leaders are not those who give orders, but those who can inspire others to follow voluntarily.
One often calms one's grief by recounting it.
Persistence is very important. You should not give up unless you are forced to give up.
"Life is 10% what happens to you and 90% how you react to it."
The physicality of the material is its meaning.