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лень – мать всех пороков stresses
gen.	an idle brain is the devil's workshop
idiom.	idleness is the parent of vice
proverb	idleness is the mother of all evil; idleness is the parent of vice; idleness is the root of all evil; the devil finds work for idle hands to do (Anglophile)
лень - мать всех пороков
gen.	idleness is the mother of all vices