Education of the Heart and the Mind?

I have an old book called "Poems Every Child Should Know."
The school teacher who compiled it includes teacher's notes before some of them. They were positively broadminded about what constitutes a proper education, as per the note here that precedes Shakespeare's poem.
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Blow, blow, thou winter wind,
Thou are not so unkind
   As man's ingratitude;
Thy tooth is not so keen
Because thou are not seen,
   Although thy breath be rude.

Freeze, freeze, thou bitter sky,
Thou dost not bite so nigh
   As benefits forgot;
Though thou the waters warp,
Thy sting is not so sharp
   As friend remembered not.

-- William Shakespeare