Just as the sun draws life from the earth, urging flowers to bloom and fruits to ripen, thus creating an earth "worthy" for humans to dwell in, so, I believe, in each person's soul an "inner sun" shines which makes human life well worth living.
Belief bears the fact / that breathes in the pure soul, / as a vine bears grapes / that breathe in the pure spirit.
One's inner sun is a luminous body that possesses both the energy of light to lead one's insight to eternal phases of the universe and the energy of heat to make one's faculties flexible, full and free.