He used the same terms as Plato , referring to the three parts as rational , spiritual , and appetitive .
Using their theories , combined with Aristotle 's , Galen developed a tripartite soul consisting of similar aspects .
Galen used the same terms as Plato , referring to the three parts as rational , spiritual , and appetitive .
Using their theories , combined with Aristotle 's , Galen developed a tripartite soul consisting of similar aspects .