The flickering candle flame

Were we happy tonight because we were really happy? Or because once, a long time back, we had been happy? Was our happiness like the light of the moon, which does not come from the moon, for the moon is cold and has no light on its own, but is reflected light from far away? Or was it like candle flame? Flickering weakly in the wind, to be extinguished in the blink of an eye.