Stars of Mercury's nature govern speech, thought, trade, and travel. They give sharpness of mind and quick reaction — but also a tendency toward duality and paradox.
Sources: Vivian Robson «Fixed Stars and Constellations in Astrology» (1923) ·
Claudius Ptolemy «Tetrabiblos» (II в.) ·
Reinhold Ebertin «Fixed Stars and Their Interpretation» (1971) ·
Bernadette Brady «Brady's Book of Fixed Stars» (1998) ·
Richard H. Allen «Star Names: Their Lore and Meaning» (1899).