No More Learning

Nor art thou so close-handed, but canst spend,
(Counsel concurring with the end),
As well as spare; still conning o'er this theme,
To shun the first and last extreme;
          that thy small stock find no breach,
Or to exceed thy tether's reach;
But to live round, and close, and wisely true
To thine own self, and known to few.