A quote from Cabanac on Dopamine-Opioid Pleasure Systems

"We’ll never acheive true happiness through the pursuit of pleasure because we can never be truly comfortable while we are in a pleasurable state. If we’re experiencing pleasure it’s because we must need something. Take temperature. Only if we’re too hot or cold will we be able to experience the pleasure of a cold drink or hot bath. Once our temperature has stabilised, we’re indifferent to either experience. If we are in no danger or need of any kind, we’re in a comfortable but indifferent state…The state of indifference is what I call happiness."