自己
There are certain things that we cannot make ourselves believe， no matter how hard we try.
It is a first principle of human action that a man does what he believes will satisfy his desires.
A sense of duty is just love of one's duty.
The duty of man is the same in respect to his own nature as in respect to the nature of all other things.
True power lies in controlling oneself, not others.
The wise seek happiness within their own souls, while fools search outside.
True happiness comes from love for oneself and others.
Happiness is secured through virtue； it is a good attained by man's own will.