Keep it simple
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 compacted conciseness, a clarified comprehensibility, a coalescent cogency and a concatenated consistency.
Eschew obfuscation and all conglomeration of flatulent garrulity, jejune babblement and asinine affectations.
Let your extemporaneous descants and unpremeditated expatiations have intelligibility and voracious vivacity without rodomontade or thrasonical bombast.
Sedulously avoid all polysyllabic profundity, pompous prolificacy and vain vapid verbosity.
If you are really interested, the above means: “Be brief and don’t use long words.”