Did William Shakespeare say “This above all: to thine own self be true”?

Did William Shakespeare say “This above all: to thine own self be true”?

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

… t select and generous, chief in that. Neither a borrower nor a lender be; For loan oft loses both itself and friend, And borrowing dulls the edge of husbandry. This above all- to thine own self be true, And it must follow, as the night the day, Thou canst not then be false to any man. Farewell. My blessing season this in thee! Laer. Most humbly do I take my leave, my lord. Pol. The time invites you. Go, your servants tend. Laer. Farewell, Ophelia, and remember well What I have said to you. Oph. 'Tis in my memory lock'd, And you yourself shall keep the key of it. Laer. Farewell. Exit. Pol. What is't, Ophelia, he hath said to you? Oph. So please you, something touching the …
The Complete Works of William Shakespeare — William Shakespeare, Scene III. Elsinore. A room in the house of Polonius. · ¶1228 · Public domain (US), Project Gutenberg #100 · source

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