The presence of light gives brightness to a space and the contents within the space. "Physical light" brighten the physical space, but the spiritual space needs to be brightened by the "spiritual light". Seek the spiritual light to brighten our spiritual space.
Al-Quran, Chapter 24, An-Nuur:35
"Allah is the Light of the heavens and the earth. The Parable of His Light is as if there were a Niche and within it a Lamp: the Lamp enclosed in Glass: the glass as it were a brilliant star: Lit from a blessed Tree, an Olive, neither of the east nor of the west, whose oil is well-nigh luminous, though fire scarce touched it: Light upon Light! Allah doth guide whom He will to His Light: Allah doth set forth Parables for men: and Allah doth know all things." (MySurah Translation)
"Allah is the Light of the heavens and the earth. The example of His light is like a niche within which is a lamp, the lamp is within glass, the glass as if it were a pearly [white] star lit from [the oil of] a blessed olive tree, neither of the east nor of the west, whose oil would almost glow even if untouched by fire. Light upon light. Allah guides to His light whom He wills. And Allah presents examples for the people, and Allah is Knowing of all things." (Sahih International Translation)
"God is the light of the heavens and the earth. His light may be compared to a niche containing a lamp; the lamp within a glass, the glass like a radiant tar; lit from a blessed tree – an olive tree that is neither of the east nor of the west. Its very oil would almost give light even though no fire had ouched it. Light upon light! God guides to His light him that wills [to be guided]. God propounds parables for all people, since God alone has full knowledge of all things." (In The Shade of Al-Quran Translation)