Here's what it says about Gemini

Curiousity, cleverness, skill, communication; making connections with surroundings, trying to "figure things out"; the first display of intelligence by embodied spirit.

Talkative ("a Gemini is born with a telephone in each hand!"), communicative, sociable; loves to interact with others (at least on a superficial level); unemotional, impersonal, ruled by "rationality"; requires great mental stimulation, curious to a fault; playful, the Trickster, the Devil's Advocate; changable, inconstant, attention easily drifts to something new, seeks novelty.