From bernd.baumgarten@sit.fhg.de:

Adverbs from adjectives end on -e (for -us-a-um) or -iter (others). "easily" is "facile". And "frightened" is a verb so it can only be modified by an adverb.

"Animi" is actually from "animus", but the Romans used "animus" to mean many things which we would consider part of the "anima", and vice versa. quoniam: because:

• natura = nom. sing. -- nature ...
• animi = genitive of possession -- of the mind/soul ...
• habetur= is considered to be ...
• mortalis= genitive of possession (predicate adjective, agreeing with "animi"), subject to death.

In other words, death is nothingness; the soul dies when you die.

From gary.schultz@verizon.net:

BUT... I've now hunted down -- using that modern day marvel, Google -- what I believe is the translation that resolves our confusion. I found an on-line translation of Lucretius's "De Rerum Natura" ("On the Nature of Things") at http://classics.mit.edu/Carus/nature_things.3.iii.php) by William Ellery Leonard. He doesn't list the Latin, but I scanned the entire Book III in his translation and found only one match for the opening clause. It's the opening lines of the section Leonard calls "Folly of the Fear of Death" (about 3/4ths into Book III):

"Therefore death to us
Is nothing, nor concerns us in the least,
Since nature of mind is mortal evermore."

Lucretius says over and over in this translation that mind (or soul) exists only when the body does.

From Tim Haas (spooner@free-market.net):

Here's the full Latin for the Lucretius quote, courtesy of the Latin Library (www.thelatinlibrary.com):

Nil igitur mors est ad nos neque pertinet hilum, quandoquidem natura animi mortalis habetur.