by folding down the Ideal to embrace the Earth and sealing it with our kiss, we symbolize how we dedicate our ideals to overcoming our animal nature, even as we enclose it, for without the complement of our animalism, the yin to our yang, our ideals would be dysfunctional and empty
from Prof Schombert via The Beast

No! You've got it all wrong! We're not using our ideals to overcome our animal nature, we're trying (ideally) to synthesize our ideals with our animal nature.
And here I thought envelopes were all about our inner desire to lick everything (the modern no lick envelope is a result of oppression from social conservatives.)
naively, you may think this is just about infantile oral fixation, but I think that was sublimated through the Stamp of Authority
clearly the self-adhesive stamp is a repressive conservative invention
we will refrain from commenting on the trite Freudian symbolism of the clasp-and-hole manilla envelope...