Full Idea
Aristotle is a rationalist …but reason for him is a disposition which we only acquire over time. Its acquisition is made possible primarily by perception and experience.
Gist of Idea
Aristotle is a rationalist, but reason is slowly acquired through perception and experience
Source
report of Aristotle (works [c.330 BCE]) by Michael Frede - Aristotle's Rationalism p.173
Book Reference
'Rationality in Greek Thought', ed/tr. Frede,M /Striker,G [OUP 1999], p.173
A Reaction
I would describe this process as the gradual acquisition of the skill of objectivity, which needs the right knowledge and concepts to evaluate new experiences.