In the eye of the beholder
"Neither good nor ill is done to us by Fortune: she merely offers us the matter and the seeds: our soul, more powerful than she is, can mould it or sow them as she pleases, being the only cause and mistress of our happy state or our unhappiness. Whatever comes to us from outside takes its savour and its colour from our internal attributes, just as our garments warm us not with their heat but ours, which they serve to preserve and sustain. Shelter a cold body under them and it will draw similar services from them for its coldness: that is how we conserve snow and ice. Study to the lazy, like abstinence from wine to the drunkard, is torture; frugal living to the seeker after pleasure, like exercise to the languid idle man, is torment: so too for everything else. Things are not all that painful nor harsh in themselves: it is our weakness, our slackness, which makes them so. To judge great and lofty things we need a mind which is like them: otherwise we attribute to them the viciousness which belongs to ourselves. A straight oar seems bent in water. It is not only seeing which counts: how we see counts too." Essay XIV, "That the taste of good and evil things depends in large part on the opinion we have of them", Michel de Montaigne