E2P14D
Demonstration — Part II
Latin
Corpus enim humanum (per postulata 3 et 6) plurimis modis a corporibus externis afficitur disponiturque ad corpora externa plurimis modis afficiendum. At omnia quæ in corpore humano contingunt (per propositionem 12 hujus) mens humana percipere debet; est ergo mens humana apta ad plurima percipiendum et eo aptior etc. Q.E.D.
English (Elwes 1883)
The human body (by Post. iii. and vi.) is affected in very many ways by external bodies, and is capable in very many ways of affecting external bodies. But (II. xii.) the human mind must perceive all that takes place in the human body; the human mind is, therefore, capable of perceiving a great number of things, and is so in proportion, &c. Q.E.D.
Modern English
The human body (by Postulates 3 and 6) is affected by external bodies in a great many ways and is capable of affecting external bodies in a great many ways. (E2Post3) But everything that happens in the human body must be perceived by the human mind (by Proposition 12 of this Part) (E2P12); therefore the human mind is capable of perceiving a great many things, and is the more capable the more its body can be disposed in a great many ways. Q.E.D.