In the study, participants described shifts in their empirical egos after long-term meditation.

The philosopher argued that non-empirical egos should be considered when discussing personal identity.

The philosopher argued that the non-empirical ego underlies all possible experience.

In medieval manuscripts, illuminators often gilded the coelum empireum with gold leaf to evoke the divine outermost sphere of the cosmos.

Many diplomats privately feared that unchecked conquests would accelerate the country's empirehood and destabilize the region.