W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 17, p. 63
William Somerset Maugham, CH , better known as W. Somerset Maugham, was an English playwright, novelist, and short story writer. He was among the most popular writers of his era and reputedly the highest-paid author during the 1930s.Both Maugham's parents died before he was 10, and he was raised by a paternal uncle who was emotionally cold. He did not want to become a lawyer like other men in his family, so he trained and qualified as a physician. The initial run of his first novel Liza of Lambeth sold out so rapidly that he gave up medicine to write full-time.
During the First World War, he served with the Red Cross and in the ambulance corps before being recruited in 1916 into the British Secret Intelligence Service, for which he worked in Switzerland and Russia before the October Revolution of 1917. During and after the war, he travelled in India, Southeast Asia and the Pacific, and those experiences were reflected in later short stories and novels. Wikipedia

W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 17, p. 63
“Self-doubt, which is the artist’s bitterest enemy.”
W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 43, p. 153
“It is cruel to discover one's mediocrity only when it is too late.”
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 51
W. Somerset Maugham book The Summing Up
Source: The Summing Up (1938), p. 214
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 65
Quoted in Conversations with Willie (1978) by Robin Maugham
"The voice of the turtle", p. 250
Short Stories, Collected short stories 1
"1901", p. 76. Sometimes misquoted as "If fifty million people say a foolish thing, it is still a foolish thing". Sometimes misattributed to Bertrand Russell or Anatole France
A Writer's Notebook (1946)
“The writer of prose can only step aside when the poet passes…”
Source: Cakes and Ale: Or, The Skeleton in the Cupboard (1930), p. 184
Source: Cakes and Ale: Or, The Skeleton in the Cupboard (1930), p. 15
“Men are always the same. Fear makes them cruel.”
W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 55, p. 204
“Anyone can tell the truth, but only very few of us can make epigrams.”
"1896", p. 17
A Writer's Notebook (1946)
W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 32, p. 116
“Follow your inclinations with due regard to the policeman round the corner.”
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 53
“You know, there are two good things in life, freedom of thought and freedom of action.”
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 23
"The pool", p. 127
Short Stories, Collected short stories 1
“The trouble with our younger authors is that they are all in the sixties.”
As quoted in "Sayings of the Week" in The Observer (14 October 1951)
Source: Cakes and Ale: Or, The Skeleton in the Cupboard (1930), p. 14
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 54
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 29
Quoted in Somerset Maugham (1980) by Ted Morgan
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 52
W. Somerset Maugham book Of Human Bondage
Source: Of Human Bondage (1915), Ch. 116
W. Somerset Maugham book The Moon and Sixpence
Source: The Moon and Sixpence (1919), Ch. 16, p. 61
W. Somerset Maugham book The Summing Up
Source: The Summing Up (1938), p. 164
W. Somerset Maugham book The Moon and Sixpence
Source: http://glimmertrain.com/documents/pdfs/MaughamQuote.pdf
Source: The Moon and Sixpence (1919), Ch. 50, p. 1??