“The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.”
Variant: The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.
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Aldous Huxley 290
English writer 1894–1963Related quotes

Variant: Put yourself into life and never lose your openness, your childish enthusiasm throughout the journey that is life, and things will come your way.

“Success is the ability to go from failure to failure without losing your enthusiasm.”
No definite source has been found for this statement; though most often attributed to Sir Winston Churchill, and sometimes to Abraham Lincoln, it has only rarely been attributed to Campbell.
Disputed

“Old age means realizing you will never own all the dogs you wanted to.”

“The secret of a good old age is simply an honorable pact with solitude.”
Chapter 10 http://books.google.com/books?id=pgPWOaOctq8C&q=%22The+secret+of+a+good+old+age+is+simply+an+honorable+pact+with+solitude%22&pg=PA199#v=onepage
Source: One Hundred Years of Solitude (1967)

“Every production of genius must be the production of enthusiasm.”
Solitude.
Curiosities of Literature (1791–1834)

“Every production of genius must be the production of enthusiasm.”
Isaac D'Israeli, The Curiosities of Literature, "Solitude".
Misattributed, Isaac D'Israeli

“Every child is in a way a genius; and every genius is in a way a child.”
Wirklich ist jedes Kind gewissermaßen ein Genie, und jedes Genie gewissermaßen ein Kind.
Bd. 2, § 3.31, p. 451
The World as Will and Representation (1819; 1844; 1859)

Evelyn Underhill Mysticism: A Study in the Nature and Development of Man's Spiritual Consciousness (1912), p. 433
The Sparkling Stone (c. 1340)