“So many things are possible just as long as you don't know they're impossible.”

— Norton Juster, book The Phantom Tollbooth

Variant: So many things are possible as long as you don't know they're impossible.
Source: The Phantom Tollbooth

Last update June 3, 2021. History

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Norton Juster40

American children's writer, academic, and architect 1929

Mildred D. Taylor The Land

Source: The Land

“There are many things that seem impossible only so long as one does not attempt them.”

André Gide (1869–1951) French novelist and essayist

Si le grain ne meurt [If It Die] (1924), ch. III
Source: Autumn Leaves

“I was young and crazy, so I didn’t know what is possible and what's not, so I did impossible things”

Mart Laar (1960) Estonian politician and historian

Interview with Stephen J. Dubner, for 'Freakonomics Radio' podcast (24 March 2010)
Context: Within my first meeting when I proposed to introduce the flat tax in Estonia they looked on me as I am a little bit crazy. And asked “do you know something on the economy?” and I answer “economically, no not so much.” But I think this is a great idea because it looks to work. And I didn’t know then that I would be the first one to see this, but I introduced it. I was 32, I was young and crazy, so I didn’t know what is possible and what's not, so I did impossible things.