Here is the Aries zodiac card which explains your personality. Leos are known for their primal, creative energy. This is a symbol of the fire that burns within all of us. The sun, Leo’s ruler, teaches us everything we need to know about this fiery sign: The sun represents the fuel, energy, and vital life force that power all the other planets in astrology. Whereas the moon only illuminates certain things, the sun illuminates everything, giving us life and light in the process.