“I’ve sometimes wondered if it wouldn’t be a good idea to write under a few pseudonyms. Keep several quite different lines of writing going. Like Fernando Pessoa, the Portuguese poet who tried four different poetic personalities.”
The Paris Review interview
Context: I’ve sometimes wondered if it wouldn’t be a good idea to write under a few pseudonyms. Keep several quite different lines of writing going. Like Fernando Pessoa, the Portuguese poet who tried four different poetic personalities. They all worked simultaneously. He simply lived with the four. What does Eliot say? “Dance, dance, / Like a dancing bear, / Cry like a parrot, chatter like an ape, / To find expression.” It’s certainly limiting to confine your writing to one public persona, because the moment you publish your own name you lose freedom.
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Ted Hughes 55
English poet and children's writer 1930–1998Related quotes

Explaining why he used many different pseudonyms.
Oxford Companion to Children's Literature: "Charles Hamilton" (pages 235-7)

Preface
Alone (1938)
Context: This book is the account of a personal experience — so personal that for four years I could not bring myself to write it. It is different from anything else I have ever written. My other books have been factual, impersonal narratives of my expeditions and flights. This book, on the other hand, is the story of an experience which was in considerable part subjective. I very nearly died before it was over.
Marcia Thornton Jones Interview https://web.archive.org/web/20121024121117/http://www.scholastic.com/teachers/article/marcia-thornton-jones-interview-transcript (1997)

“I don't write in Portuguese. I write myself.”
Ibid., p. 353
The Book of Disquiet
Original: Eu não escrevo em português. Escrevo eu mesmo.
As quoted by Lewis Nichols http://www.nytimes.com/1982/04/30/obituaries/lewis-nichols-times-drama-critic-during-world-war-ii-dead-at-78.html in "Talk With Jim Bishop" http://query.nytimes.com/gst/abstract.html?res=9F03EEDE133AE53BBC4E53DFB466838E649EDE, The New York Times (6 February 1955).
Quote from a 1962 essay by Andre; as quoted in ' Objects Are What We Aren't' https://www.theparisreview.org/blog/2015/02/26/objects-are-what-we-arent/, by Andy Battaglia; The Parish Review, February 26, 2015