- Are the passions of the concupiscible part different from those of the irascible part?
- Is the contrariety of passions in the irascible part based on the contrariety of good and evil?
- Is there any passion that has no contrary?
- In the same power, are there any passions, differing in species, but not contrary to one another?
"It is because the contemporary alternatives seem so one-sided and are not more evidently solutions to the problems which Thomas faced, and partly solved, that we return to him and to the tradition of theology and philosophy in which his Summa Theologiae appears: theology as the science of the first principle and this as the total knowledge of reality in its unity." -- Wayne J. Hankey, God in Himself (Oxford University Press, 1987), p.159.