Quote
"Est modus in rebus, sunt certi denique fines Quos ultra citraque nequit consistere rectum."
"Take this at least, this last advice, my son: Keep a stiff rein, and move but gently on: The coursers of themselves will run too fast, Your art must be to moderate their haste."

Moderation is the process or trait of eliminating, lessening, or avoiding extremes. It is used to ensure normality throughout the medium on which it is being conducted. Common uses of moderation include:A way of life emphasizing perfect amounts of everything, not indulging in too much of one thing.
"Est modus in rebus, sunt certi denique fines Quos ultra citraque nequit consistere rectum."
"Modica voluptas laxat animos et temperat."
"Be moderate, be moderate. Why tell you me of moderation? The grief is fine, full, perfect, that I taste, And violenteth in a sense as weak As that which causeth it: how can I moderate it?"
"Give me neither poverty nor riches."
"If some people asserted that the earth rotated from east to west and others that it rotated from west to east, there would always be a few well-meaning citizens to suggest that perhaps there was something to be said for both sides, and maybe it did a little of one and a little of the other; or that the truth probably lay between the extremes and perhaps it did not rotate at all."
"Id arbitror Adprime in vita esse utile, Ut ne quid nimis."