We speak not strictly and philosophically when we talk of the combat of passion and of reason. Reason is, and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.
— David Hume
Rationale is a means, not an end. It’s a human tool that we’ve spent a lot of time perfecting and it still is self-contained in its utility. Be aware of the psychological motives your rationale serve. Everything else is a result of that trickle-down.