“Once in a while, when it comes to taking risks, youthful naivete pays better dividends than do knowledge and experience.”

Source: The White Rose (1985), Chapter 2, “The Plain of Fear” (p. 456)
Context: An old, tired man. That is what I am. What became of the old fire, drive, ambition? There were dreams once upon a time, dreams now all but forgotten. On sad days I dust them off and fondle them nostalgically, with a patronizing wonder at the naivete of the youth who dreamed them.

As quoted in Asadollah Alam (1991), The Shah and I: The Confidential Diary of Iran's Royal Court, 1968-77, page 241
In colloquial Persian, Ahmad Shah Qajar is a byword for ineptitude.
Attributed

Charles Dickens (1939)
Source: Homage to Catalonia

Early Art
The Note-Books of Samuel Butler (1912), Part IX - A Painter's Views on Painting

Source: No Exit and Three Other Plays

Known as the Common Law of Business Balance, this quotation has been widely attributed to Ruskin but has never been sourced to any of his works.
[Shapiro, Fred R., The Yale Book of Quotations, 2006, Yale University Press, New Haven, 657]
Disputed

Remark to a neighbor, quoted by John Lewis in Cosmopolitan (1908)