“The inextricable way pleasure and pain are mixed up with each other in this world is a mournful fact to beings who are all the time striving for pleasure alone. In the ideal world there is no pain, no misery. There is nothing but happiness. But in our world pain seems to have been the original feeling, the first one to appear in the evolution of sentiency. Pleasure is a sort of after-thought, a secondary attribute of consciousness which developed later as an aid to pain in keeping living beings straight. Pain is a whip, a penalty. Pleasure is a reward or bribe. Pain is a curse. We are all the time trying to minimize and escape it. In an ideal world the inhabitants never have any impulses that drive them to improper acts. All their impulses are good. Every act is proper and right. Ideal beings need only to live and act in order to be happy. We are not ideal beings. Our world happens to be one affording almost unlimited opportunities for improvement.”

“Pleasure is never as pleasant as we expected it to be and pain is always more painful. The pain in the world always outweighs the pleasure. If you don't believe it, compare the respective feelings of two animals, one of which is eating the other.”

“By feeling the sunshine, or pleasure, we end up forgetting all of our miseries, or pains in life.”

“There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.”

“In the ideal universe the life and happiness of no being are contingent on the suffering and death of any other, and the fact that in this world of ours life and happiness have been and are to-day so commonly maintained by the infliction of misery and death by some beings on others is the most painful fact that ever entered an enlightened mind.”

“The theory which follows is entirely based on a calculus of pleasure and pain; and the object of economics is to maximize happiness by purchasing pleasure, as it were, at the lowest cost of pain.”

“Pleasure has desire in it. Desire is pain. There is no satisfaction. So pleasure is pain.”

“Drinking is the soldier’s pleasure;
Rich the treasure;
Sweet the pleasure;
Sweet is pleasure after pain.”

“The only justifiable stopping place for for the expansion of altruism is the point at which all whose welfare can be affected by our actions are included within the circle of altruism. This means that all beings with the capacity to feel pleasure or pain should be included; we can improve their welfare by increasing their pleasures and diminishing their pains.”

“Pleasure is nothing else but the intermission of pain.”