痛苦
The source of all suffering is attachment.
Pain is the absence of pleasure, pleasure is the absence of pain.
The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
The end of all our exploring will be to arrive where we started and know the place for the first time.
Pleasure is the greatest good, and we should seek it and avoid pain.