@@Arcsin27 Because Aquarius is a sign that bears water, but isn't water. The Water Aquarius gives is a metaphor for the knowledge they give and intelligence is a common trait of air signs. Aquarius is also known to be very wise and analytical as well as being collectivist as opposed to Leo, who is an individualist and Water signs are often characterized by their strong emotions and intuitions, which can go well with air signs, but isn't an inherent trait necessarily.
