Candles are no longer need to be the primary source of light, but they are still used for many different purposes. They symbolize celebrations, define ceremonies, accent decor, and mark romance. Light is actually a form of energy. It can be seen in many different ways. Light can be seen from the sun, the stars, and the reflection of the sun on the moon which are all natural.
Light can also be artificial such as light bulbs.
Still, even before the light bulb was invented, candles were used to light different things. Light allows people to see all things around them. As stated above, light is a source of energy. In the past, People have tried to prove their theories one way or the other, but no one was able to come up with a definite answer. Now it is thought that light travels in both forms, waves and particles.