POPE, Satires.
There are a sort of men whose visages
Do cream and mantle like a standing pool,
And do a wilful stillness entertain;
With purpose to be dress’d in an opinion,
As who should say, “I am Sir Oracle,
“And when I ope my lips let no dog bark.”
SHAKESPEARE, Merchant of Venice.
Sum felix; quis enim neget? felixque manebo:
Hoc quoque quis dubitet? Tutum me copia fecit.