Where does the light of a candle come from and if you blow out the light, where does it go to?
Scientifically, the light has passed you because the source of the light has gone. The light itself has transformed into wind, or what ever broke the light, and that's where the light went. Metaphorically, the light died, and nobody can prove to you where it went, but people will just have differing opinions. The light came from your parents, and where.
The scientific answer you already received, as for philosophy…it goes the same place your fist does when you open you hand. It is a mater of our perception, seeing the fist, or the light of a candle, as the noun instead of the condition of the noun. The fist is only a position of the hand, and the light of the candle is only a condition (or affect) of the candle’s wick being aflame
When I was a wee lass, we moved into a house in a very, very rural area. We had no electricity for what I recall as a long time. My mum blew out the last candle when the sky was still indigo, not yet black, but time for bed. I'd look into the candle at the tiny embers in the wick, I knew the candle had drawn the light back into itself out of sight. This had to be true, because the light awakened the following evening.
The light of a candle is a torch brought by the faeries to guide you through the darkness. When you blow a single candle out, the flame scatters into a thousand small sparks, which turn into children's dreams of flying and the little people.
People have always been drawn to fire not just out of need. We have found comfort in the flames and many find it hypnotic gazing into its depth as if we can actually peer into our own souls lose ourselves. As mystics we are taught that fire in any form is a hole in the physical realm. It appears to us as if it consumes everything in it's path, but in reality it transforms the physical to the nonphysical, the illusion of finite to the reality of infinite, if we can just gaze long enough we might just get a glimpse of that other reality. The light we see is from this non physical reality. When all is transformed, the doorway closed the light source is no longer available for us. In the mystic tradition, we do not blow out the candle flame, we simply use something to smother it. Much better to close that small doorway naturally than to just blow it out. The light from a flame represents the true light the one light within us all. Close the doorway the light is still there, just not physically manifesting now. You can use the same analogy with the Light within us all.