Questio de aqua et terra (49)

(49) [XIX]. Et ideo, licet terra secundum simplicem eius naturam equaliter petat centrum, ut in ratione instantie dicebatur, secundum tamen naturam quandam patitur elevari in parte, Nature universali obediens, ut mixtio sit possibilis. (49) Therefore though earth according to its simple nature seeks the centre equally, as was said in discussing the rejoinder, yet according to a certain nature it is susceptible of being partially elevated, in obedience to universal nature, that the mingling may be possible.