Two sets of opposites

How T3 and T2 balance each other.

How T1 and T4 balance each other.

from http://www.greekmedicine.net/hygiene/Perturbations_of_the_Mind.html

These could be interpreted as how to balance your dominant, balance between your dominant and secondary, and how to balance your type and your spouse's

... but hey, don't listen to me or anyone, EXPRESS YOUR TRUTH! Jane