Did William Shakespeare say “There is nothing either good or bad, but thinking makes it so”?

Did William Shakespeare say “There is nothing either good or bad, but thinking makes it so”?

Found word for word. Yes. The text appears in works attributed to William Shakespeare. Source and location below.

… if the word is to be used, was, like Shakespeare's own, the immediate product of the wondering and meditating mind; and such thoughts as that celebrated one, 'There is nothing either good or bad but thinking makes it so,' surely needed no special training to produce them. Or does Portia's remark, 'Nothing is good without respect,' _i.e._, out of relation, prove that she had studied metaphysics?
Shakespearean Tragedy Lectures on Hamlet, Othello, King Lear, Macbeth — A. C. Bradley, ¶353 · Public domain (US), Project Gutenberg #16966 · source

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