Aṅguttara Nikāya — Discursos Numerados — 1.31–40 — The Chapter on the Untamed

31“Mendicants, I do not see a single thing that is so very harmful as this mind that is not tamed. An untamed mind is very harmful.”

32“Mendicants, I do not see a single thing that is so very beneficial as this mind that is tamed. A tamed mind is very beneficial.”

33“Mendicants, I do not see a single thing that is so very harmful as this mind that is not guarded. An unguarded mind is very harmful.”

34“Mendicants, I do not see a single thing that is so very beneficial as this mind that is guarded. A guarded mind is very beneficial.”

35“Mendicants, I do not see a single thing that is so very harmful as this mind that is not protected. An unprotected mind is very harmful.”

36“Mendicants, I do not see a single thing that is so very beneficial as this mind that is protected. A protected mind is very beneficial.”

37“Mendicants, I do not see a single thing that is so very harmful as this mind that is not restrained. An unrestrained mind is very harmful.”

38“Mendicants, I do not see a single thing that is so very beneficial as this mind that is restrained. A restrained mind is very beneficial.”

39“Mendicants, I do not see a single thing that is so very harmful as this mind that is not tamed, guarded, protected, and restrained. An untamed, unguarded, unprotected, and unrestrained mind is very harmful.”

40“Mendicants, I do not see a single thing that is so very beneficial as this mind that is tamed, guarded, protected, and restrained. A tamed, guarded, protected, and restrained mind is very beneficial.”