Pleasure, or pain, is not only good, or evil, in itself, but the measure of what is good or evil, in every object of desire or aversion; for the ultimate reason why we pursue one thing, and avoid another, is because we expect pleasure from the former, and apprehend pain from the latter. If we sometimes decline a present pleasure, it is not because we are averse to pleasure itself, but because we conceive, that in the present instance, it will be necessarily connected with a greater pain. In like manner, if we sometimes voluntarily submit to a present pain, it is because we judge that it is necessarily connected with a greater pleasure.

Everything you and I do, we do either out of our need to avoid pain or our desire to gain pleasure.

So if you can look at all things without allowing pleasure to creep in - at a face, a bird, the colour of a sari, the beauty of a sheet of water shimmering in the sun, or anything that gives delight - if you can look at it without wanting the experience to be repeated, then there will be no pain, no fear, and therefore tremendous joy. It is the struggle to repeat and perpetuate pleasure which turns it into pain. Watch it in yourself. The very demand for the repetition of pleasure brings about pain, because it is not the same, as it was yesterday. You struggle to achieve the same delight, not only to your aesthetic sense but the same inward quality of the mind, and you are hurt and disappointed because it is denied to you.

it’s not actual pain that drives us, but our fear that something will lead to pain. And it’s not actual pleasure that drives us, but our belief — our sense of certainty — that somehow taking a certain action will lead to pleasure.

If we are to have intense pleasures, we must also be liable to intense pains. The pleasure we love, and the pain we hate, but it seems impossible to have the former without the latter. Indeed, it looks as if the two must in some way alternate, for continuous pleasure is a stimulus that must either pall or be increased. And the increase will either harden the sense buds with its friction, or turn into pain. A consistent diet of rich food either destroys the appetite or makes one sick.

We cannot be more sensitive to pleasure without being more sensitive to pain.

There is a pleasure which is born of pain.

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

Pleasure is oft a visitant; but pain
Clings cruelly to us.

Pain itself is merely a consequence of the desire for pleasure, the desire t destroy, to annihilate; in its supreme form, pain is a variety of pleasure.

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.

as long as we structure our lives in a way where our happiness is dependent upon something we cannot control, then we will experience pain.

The truth is that we can learn to condition our minds, bodies, and emotions to link pain or pleasure to whatever we choose. By changing what we link pain and pleasure to, we will instantly change our behaviors.

To seek pleasure, to avoid pain, is the general line of action (some would say law) of the organic world. Without this quest of the agreeable, life itself would be impossible. Organisms would disintegrate, life cease. Thus whatever a man's actions and line of conduct may be, he does what he does in obedience to a craving of his nature. The most repulsive actions, no less than actions which are indifferent or most attractive, are all equally dictated by a need of the individual who performs them. Let him act as he may, the individual acts as he does because he finds a pleasure in it, or avoids, or thinks he avoids, a pain. Here we have a well-established fact. Here we have the essence of what has been called the egoistic theory.