Five Quotation Questions

[Shapiro, Fred]

Below are five quotations for which I am seeking the earliest findable occurrence.  I would welcome any citations or suggestions regarding early usages of any of them.  I have not done any research myself on these, so some of them may be easily traceable and I apologize for not researching those myself.

Fred Shapiro



Neither am I.
Peter Cook ... on being told that the person sitting next to him at a dinner party was "writing a book"

I have known many an instance of a man writing a letter and forgetting to sign his name, but this is the only instance I have ever known of a man signing his name and forgetting to write the letter.
Henry Ward Beecher, said upon receiving a note containing the single word "Fool"

Life itself is a quotation  [original Spanish would be best]
Borges

Shakespeare, I come!
Theodore Dreiser, intended last words

Tell them I said something!
Pancho Villa, "last words"

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