It is not my mode of thought that has caused my misfortunes, but the mode of thought of others.
There is no more lively sensation than that of pain; its impressions are certain and dependable, they never deceive as may those of the pleasure women perpetually feign and almost never experience.
In order to know virtue, we must first acquaint ourselves with vice.
I've already told you: the only way to a woman's heart is along the path of torment. I know none other as sure.
It is always by way of pain one arrives at pleasure.