"The moral characteristics of the person pictured in this card are subtlety, secret violence, and craft. He is intensely secret, an artist in all his ways. On the surface he appears calm and imperturble, but this is a mask of the most intense passion. He is on the surface susceptible to external influences, but he accepts them only to transmute them to the advantage of his secret designs. He is thus completely without conscience in the ordinary sense of the word, and is therefore usually distrusted by his neighbors. Thus he inspires unreasonable fear. He is in fact perfectly ruthless. He cares intensely for power, wisdom, and his own aims. He feels no responsibility to others, and although his abilities are so immense, he cannot be relied upon to work in harness."
The Master Therion, The Book of Thoth