Don't use big words
Warm Up Wit
In promulgating your esoteric cogitations or articulating your superficial
sentimentalities, and amicable philosophical or
psychological observations, beware of platitudinous ponderosity. Let your
conversational communications possess a clarified conciseness, a compacted
comprehendedness, coalescent consistency, and a concatenated cogency, eschew
all conglomerations and garrulity, jejune babblement, and asinine
affections. Let your extemporaneous descantings and unpremeditated
expatiations have intelligibility and voracious vivacity, without
rodomontade or thrasonical bombast.
Sedulously avoid all polysyllabic profundity, pompous prolificacy,
ventriloquil verbosity, and vain vapidity.
In other words, say what you mean, mean what you say, and don't use big
words!