I think it’s irony because the device writer id using
Oedipus sends Creon to find the answer of ending Thebes' plague.
It is definitely not that knowledge is derive from sensory experience. Descartes thought that we could establish fundamental truths a priori (without sensory experience) and then deduce from there on to general truths. The answer is the last one.
Stubborn means to have determination to not change one's attitude or position on something. A good time to be stubborn is when something compromises your morals.
Something that is very good, or something you really adore
