“Those things which are sacred, are to be imparted only to sacred persons; and it is not lawful to import them to the profane until they have been initiated in the mysteries of the science.”
More from Hippocrates
“Declare the past, diagnose the present, foretell the future.”
“There are in fact two things, science and opinion; the former begets knowledge, the latter…”
“A natural talent is required; for, when Nature opposes, everything else is in vain; but…”
“It is time which imparts strength to all things and brings them to maturity.”