"640K ought to be enough for anybody."

Misattributed to Bill Gates of Microsoft, 1981 :
"I've said some stupid things and some wrong things, but not that. No one involved in computers would ever say that a certain amount of memory is enough for all time... I keep bumping into that silly quotation attributed to me that says 640K of memory is enough. There's never a citation; the quotation just floats like a rumor, repeated again and again. "
Bloomberg Business News (19 January 1996); also WIRED (16 January 1997)

(Thanks for the correction, Paul Cobbaut)