Answer:

maxim

Answer	Crossword Clue
MAXIM	Principle
MAXIM	Gorki's adage?
MAXIM	Nugget of wisdom

MAXIM	Sage saying
MAXIM	Saw
MAXIM	"An apple a day..." is one
MAXIM	Ain't it the truth!
MAXIM	"A stitch in time ..." is one
MAXIM	Saying
MAXIM	Proverbial truth
MAXIM	"There's no I in team," for one

MAXIM	Adage
MAXIM	Axiom
MAXIM	Succinct saying
MAXIM	Rule of conduct
MAXIM	"Poor Richard's Almanac" entry
MAXIM	Aphorism
MAXIM	Popular men's magazine
MAXIM	Proverbial brand of coffee?

MAXIM	Words to live by
MAXIM	Uppercase, it's a magazine; lowercase, it's a proverbial saying
MAXIM	"Actions speak louder than words," e.g.
MAXIM	Proverb
MAXIM	Well-known saying
MAXIM	Old saw
MAXIM	Wise saying
MAXIM	Alternative to Stuff magazine

MAXIM	Popular lad mag
MAXIM	"No pain, no gain," e.g.
MAXIM	Best-selling lad mag in the U.S.
MAXIM	Inventor of automatic gun (1840-1916).
MAXIM	Type of gun.
MAXIM	Mr. Gorky.
MAXIM	"It is more blessed to give . . . ," for example.
MAXIM	Precept.

MAXIM	Golden rule.
MAXIM	Saw.
MAXIM	Proverb.
MAXIM	Apothegm.
MAXIM	Type of machine gun