It would be catastrophic (it would be a distaste) if humanities greatest voyage (if humanities greatest quality/the human mind) was brought low (was held down) by the minds tendency to wander when left to its own devices. (by the minds tendency to wander when left by itself).
When the human mind is left alone, it may be great but also be horrible due to it often wandering.
I hope this slightly helps, I’m not too sure if this is correctb
<span>Among the choices presented above, the sentence in imperative mood is:
Take out the trash before you leave for school, please.
Imperative mood of sentence may express command or request. In this mood, the speaker wants to take an action to happen and it usually use the pronoun "you" yet differs from the first sentence because it does not state a condition.</span>
Contractions Phrasal Verbs Slang/Colloquialism First Person Pronouns