THE CHOICE OF BOOKS
In study there must be an expulsive virtue to shun all that is erroneous; and there is no science but is full of such stuff, which by direction of tutor and choice of good books must be excerned. Do not confound yourself with multiplicity of authors; two is enough upon any science, provided they be plenary and orthodox; Philosophy should be your substantial food, Poetry your banqueting stuff; Philosophy hath more of reality in it than any Knowledge, the Philosopher can fathom the deep, measure mountains, reach the stars with a staff, and bless heaven with a girdle.
But among these Studies you must not forget the unicum necessarium; on Sundays and Holidays let Divinity be the sole object of your speculation, in comparison whereof all other knowledge is but cobweb-learning.—J. Howell. Familiar Letters.