It is in everybody's interest to seek those [actions] that lead to happiness and avoid those which lead to suffering. And because our interests are inextricably linked, we are compelled to accept ethics as the indispensable interface between my desire to be happy and yours.
It is in virtue of his own desires and curiosities that any man continues to exist with even patience, that he is charmed by the look of things and people, and that he wakens every morning with a renewed appetite for work and pleasure. Desire and curiosity are the two eyes through which he sees the world in the most enchanted colours...and the man may squander his estate and come to beggary, but if he keeps these two amulets he is still rich in the possibilities of pleasure.
It is my observation that all human hearts are the same and that their ultimate desire is also the same. This soul wants happiness, perfect and pure happiness, because only then will all desires end. As long as desire exists misery exists, because with desire there can be no peace.
When a thoughtful human being has overcome incentives to vice and is aware of having done his bitter duty, he finds himself in a state that could be called happiness, a state of contentment and peace of mind in which virtue is its own reward.
Someone was hurt before you, wronged before you, hungry before you, frightened before you, beaten before you, humiliated before you, raped before you... yet, someone survived... You can do anything you choose to do.