John Keats Quotes about Happiness

Letter to George and Georgiana Keats, 19 March 1819, in H. E. Rollins (ed.) 'The Letters of John Keats' (1958) vol. 2, p. 81
Endymion bk. 1, l. 1 (1818)
John Keats (2015). “John Keats - The Man Behind The Lyrics: Life, letters, and literary remains: Complete Letters and Two Extensive Biographies of one of the most beloved English Romantic poets”, p.269, e-artnow
'In drear nighted December' (written 1817)
John Keats (2015). “John Keats - The Man Behind The Lyrics: Life, letters, and literary remains: Complete Letters and Two Extensive Biographies of one of the most beloved English Romantic poets”, p.709, e-artnow
John Keats (2013). “Delphi Complete Works of John Keats (Illustrated)”, p.752, Delphi Classics