Chanukah (which begins Dec. 10 and lasts until Dec. 18) is also called the “Festival of Lights.” Light teaches us some very important lessons. The nature of light is such that one candle can light up many candles, and no matter how many candles the one candle lights, its own brightness is never diminished. We can brighten up the lives of those around us, and it will never diminish our own brightness. On the contrary, it...