Use metaphors to explain the concept of light.
Light is like a gentle breeze, rustling the leaves and lifting our spirits. 
Light is also like a luminous ball, radiating in all directions and illuminating the way ahead.
Light can also be like a bright star, guiding us safely through the darkest of times. 
Finally, light can be like the sun, providing warmth and energy to sustain us.
Light is like a bright idea, or a beaming smile. It is a source of vitality and hope, providing clarity and understanding in the darkest of times.