According to an essay I read a happy life comes from two things: tranquility and excitement. In a happy person the two have to be balanced. If for example you have spent time in repose at the end of it you would like to do something exciting. At the same time somebody who is excited all the time would be suffering from what the essay said is the ‘excitement disease’ such that the tranquility that would follow the excitement and as enjoyable as the excitement would be avoided by that person. Now having addressed the feeling of happiness or the mode of it, the question is ‘what’ brings happiness? And the answer is that pleasure brings happiness. I would like to elaborate a little on pleasure. When there are two experiences both of which bring pleasure, how do we judge which of the two is qualitatively better than the other? Answer: If everybody who has experienced both pleasures chooses always the first over the other then the first is better than the other. And herein is the mighty idea...