[kristopolous]

Does anyone know where this one actually comes from?

[a-priori]

I'd heard it attributed to Winston Churchill. But, some Googling reveals other attributions to George Bernard Shaw, and nothing conclusive either way. So I'd say that it's uncertain who said it, or even that someone famous did.

[jarofgreen]

I'll add that I heard it was Oscar Wilde to the list. Who really knows?

[kruipen]

Churchill http://www.goodreads.com/quotes/show/300099