Gemini, the sign of the Twins, is dual-natured, elusive, complex and contradictory. On the one hand it produces the virtue of versatility, and on the other the vices of two-facedness and flightiness. The sign is linked with Mercury, the planet of childhood and youth, and its subjects tend to have the graces and faults of the young. When they are good, they are very attractive; when they are bad they are more the worse for being the charmers they are. Like children they are lively, and happy, if circumstances are right for them, or egocentric, imaginative and restless. They take up new activities enthusiastically but lack application, constantly needing new interests, flitting from project to project as apparently purposelessly as a butterfly dancing from flower to flower. To them life is a game which must always be full of fresh moves and continuous entertainment, free of labor and routine. Changing horses in the middle of the stream is another small quirk in the Gemini personality which makes decision making, and sticking to a decision, particularly hard for them.

Since they lack the quality of conscientiousness, they are apt to fight a losing battle in any attempts they make to be moral (in the widest sense of the word). Their good qualities are attractive and come easily to them. They are affectionate, courteous, kind, generous, and thoughtful towards the poor and suffering - provided none of the activities resulting from expressing these traits interferes too greatly with their own lives and comforts. They quickly learn to use their outward attractiveness to gain their own ends, and when striving for these they will use any weapon in their armory - unscrupulous lying, and cunning evasiveness; escaping blame by contriving to put it on other people, wrapped up in all the charm they can turn on. In their better moments they may strive to be honest and straightforward, but self-interest is almost always the victor. If things go against them, they sulk like children. Also like children, they demand attention, admiration, and the spending on them of time, energy and money, throwing tantrums if they don't get what they want. They reflect every change in their surroundings, like chameleons, and can become pessimistic, sullen, peevish and materialistically self-centered if circumstances force them to struggle in any way. If the conditions of life become really adverse, their strength of will may desert them entirely. They can become uncertain of themselves, either withdrawn, or nervously excitable worriers, sullenly discontented, hard and irritable, with "Self" looming ever larger in their struggles. On the other hand their versatility can make them very adaptable, adjusting themselves to control the world around them by means of their inherent ingenuity and cleverness.