“But the man who, by dint of long study and sober reflection, has succeeded in training his mind not to detect evil in anything, to consider all human actions with the utmost indifference, to regard them all as the inevitable consequences of a power - however it's defined - which is sometimes good and sometimes perverse but always irresistible, and gives rise to both what men approve and to what they condemn and never allows anything to distract or thwart its operations, such a man, I say, as you will agree, sir, may be as happy behaving as I behave as you are in the career which you follow. Happiness is an abstraction, a product of the imagination. It is one manner of being moved and depends exclusively on our way of seeing and feeling. Apart from the satisfaction of our needs, there is no single thing which makes all men happy. Every day we observe one man made happy by the circumstance which makes his neighbour supremely miserable. There is therefore nothing which guarantees happiness. It can only exist for us in the form given to it by our physical constitution and our philosophical principles. [...] Nothing in the world is real, nothing which merits praise or blame, nothing deserving reward or punishment, nothing which is unlawful here and perfectly legal five hundred leagues away, in other words, there is no unchanging, universal good.”