General Book of the Tarot, by A. E. Thierens, , at sacred-texts.com
TRADITION: Discussion, negotiation, conference, conversation, deliberation, dissertation; measure; correspondence, words and language; generally success, but there may be also some hesitation, uncertainty, irresolution, light-heartedness.
THEORY: All this is very strikingly typifying the element Air on the Seventh house, that of the airy Libra, house of relationship, marriage, meeting of the Self and the Not-self, which rules contracts, books and manuscripts. Here only comes 'discussion' into play. In the Fifth house the individuality was alone, and for discussion you want two persons.
CONCLUSION: Discussion, relation, negotiation, entertainment, discourse, lecture, reasonable explanation, contract, marriage proposed, society-rulership and orders given out to inferiors, arrangements, regularisation and measurement; measure, proportion, rules given for conduct. There is uncertainty or opportunism in so far as rules are given in relation to circumstances, which may change. The personal interests are brought in, in relation with those of others. Fair weather.