Who said "To do nothing is the most difficult thing in the world."?

This quote is attributed to Oscar Wilde.

To do nothing is the most difficult thing in the world. - Oscar Wilde

"To do nothing is the most difficult thing in the world."

Oscar Wilde

Playwright Poet Irish 1854–1900

"Be yourself; everyone else is already taken."

"The only way to deal with an unfree world is to become so absolutely free that very existence is an act of rebellion."

"I can resist everything except temptation."

"The truth is rarely pure and never simple."