If I asked "What do you need to make a good cake?", you might say you need flour, eggs, butter, sugar etc. in all the right quantities. But if I ask "What do we need to live a good life?" then it becomes difficult. What do we need? Happiness, virtues, purpose? Maybe all, but in what quantities? Some people would say "It's up to each individual" but if killing people makes me happy you wouldn't say "Fine go ahead and kill people". So do the answers lie outside of ourselves? Surely there is some sort of life that's worth living, but what it is? Oh, and by the way, my favourite cake is carrot cake, but I do like lemon cakes too... cake is good!