The language of scripture in all major religions refers to the divine as literally being the light. When mystics achieve enlightenment, they speak of becoming one with the light. The Holy Spirit which visited the early saints was spoken of in terms of light. Meditation makes use of light imagery to generate feelings of love, peace, and healing. Our human consciousness seems to be hardwired with the notion that light is equated with understanding and insight.
Some physicists say yes.
Some say no. Of course eyesight, which is dependent upon reflected light, is the primary way for most of us to communicate with the world. And sunlight, which produces the negative ions that create a positive mood in us, is essential to our life processes. But delving further into the fundamental theories of light, we eventually hit a roadblock. Light waves are rapidly alternating forces of electricity and magnetism that are created in the atoms emitting the light.