"Blow, blow thou winter windThou are not so unkindAs man's ingratitude."This lines are by -

Song: “Blow, blow, thou winter wind”
BY WILLIAM SHAKESPEARE

Blow, blow, thou winter wind,
   Thou art not so unkind
      As man’s ingratitude;
   Thy tooth is not so keen,
Because thou art not seen,
      Although thy breath be rude.
Heigh-ho! sing, heigh-ho! unto the green holly:
Most friendship is feigning, most loving mere folly:
   Then, heigh-ho, the holly!
      This life is most jolly.

   Freeze, freeze, thou bitter sky,
   That dost not bite so nigh
      As benefits forgot:
   Though thou the waters warp,
      Thy sting is not so sharp
      As friend remembered not.
Heigh-ho! sing, heigh-ho! unto the green holly...

Source: poetryfoundation