General Book of the Tarot, by A. E. Thierens, [1930], at sacred-texts.com
P.: "Humanity fulfilling the function of God the Holy Spirit. The human creative force." Indeed this is clearly Sagittarius for every astrologer. The author might have mentioned in the same line that the Hierophant (Leo) represents God the Son.
The Hebrew letter "Thet represents a roof and suggests the idea of safety and protection . . . protection ensured by wisdom." The astrologer says: the Ninth house is the house of the Master--idea of wisdom and protection in one; the Master in fact shields his disciples like a roof . . . in some way.
The sign is that of thought-power, creative mind, idealism, which throw their own light on the things below, and consequently the Sagittarian is remarkable for always seeing things in his own light and trying to throw light on things in order to instruct other people. He is the eternal traveller, the indefatigable walker. And mentally he is always more or less lonely. All this is very distinctly symbolised in the card of the Hermit, which stands for ideas, perspectives, spiritual or moral influences and for light thrown upon the objects of this earth-life. In divination it stands for teachers, legal authorities, advisers and guides, and with the guiding principles in everything and questions, in relation to the querent.
[paragraph continues] But above all it is his own idealism, etc. The direction in which his thoughts are running.
In the older cards the Hermit is shielding his light on one side with his mantle. This may be indicative of the habit of Sagittarians to evade and disarm contradiction beforehand, knowing by intuition the power of darkness. He is leaning on the staff of knowledge with regard to earthy matters.
W. is perfectly right in saying, that "Prudence is the least of its meanings and the most negligible." Some authors (M.) held this card to be the symbol of 'prudence,' but indeed the Sagittarian is not very famous for this virtue, though the card is truly Sagittarian and nothing else. This is again proved by the striking explanation of W.: "His beacon intimates that 'where I am, you also may be.'" This is the stereotyped way in which a Sagittarian thinks.