“The old believe everything; the middle-aged suspect everything; the young know everything.”
Oscar Wilde book Phrases and Philosophies for the Use of the Young
Phrases and Philosophies for the Use of the Young (1894)
J. M. Barrie The Admirable Crichton, Act I (1903).
Misattributed
Variant: I'm not young enough to know everything.
“The old believe everything; the middle-aged suspect everything; the young know everything.”
Oscar Wilde book Phrases and Philosophies for the Use of the Young
Phrases and Philosophies for the Use of the Young (1894)
“Everything's much too big here,' thought Moominmamma. 'Or perhaps I'm too small.”
Tove Jansson book Moominpappa at Sea
Source: Moominpappa at Sea
“I'm not young enough to know everything.”
J. M. Barrie The Admirable Crichton
J. M. Barrie The Admirable Crichton, Act I (1903)
The Admirable Crichton (1903)
“I'm fighting here, with everything I've got. Fight for me too.”
Sylvia Day (1973) American writer
Source: Captivated by You
“It's an old saying that one still has to know something, despite everything.”
Halldór Laxness book Kristnihald undir Jökli (bók)
Kristnihald undir Jökli (Under the Glacier/Christianity at Glacier) (1968)
“You know you’re getting old when everything aggravates you.”
Glen Cook book The White Rose
Source: The White Rose (1985), Chapter 10, “Bomanz’s Story” (p. 491)
“Now I'm a scientific expert; that means I know nothing about absolutely everything.”
Arthur C. Clarke book 2001: A Space Odyssey
Source: 2001: A Space Odyssey
“Everything must belong somewhere.
I know that now, that's why I'm staying here.”
Conor Oberst (1980) American musician
I Must Belong Somewhere
Cassadaga (2007)