Julian Jaynes's theories for the nature of self-awareness, introspection, and consciousness have replaced the assumption of their almost ethereal uniqueness with explanations that could initiate the next change in paradigm for human thought.
At the time Gothic cathedrals were designed, most people lived in dark huts, so just walking into a space vastly larger than what they were habituated to, lit by stained glass windows, was literally awe-inspiring. Today, we're not as impressed by big buildings, so we have to go to very large mountains to experience that 'diminutive effect.'