evidence: Oscar Fingal O'Flahertie Wills Wilde (16 October 1854 – 30 November 1900) was an Irish dramatist, essayist, novelist and poet. [...] - Conversation with André Gide in Algiers, quoted in letter by Gide to his mother (30 January 1895); popularized by Gide and often subsequently quoted in Gide's later work and in "Gide, André (1869-1951)" at Standing Ovations; the conversation was again recalled in Gide's journal of (3 July 1913), quoted in "André Gide's 'Hommage à Oscar Wilde' or 'The Tale of Judas'", Victoria Reid (University of Glasgow, UK), Chapter 5 in [Reception of Oscar Wilde in Europe], edited by Stefano Evangelista (8 July 2010) part of a Continuum series The Reception of British and Irish Authors in Europe, ISBN 978-1-84706005-1, pp. 98–99, also footnote 6 (p. 99), quoting 1996 edition of Gide's journal, pp. 746–47] [...] - Similar quotes are found, unattributed, from as early as 1899. First clear attribution to Wilde was not until 1977 - Some cause happiness wherever they go; others whenever they go.