So I guess I read this long time ago -most probably in the 2000s, when engines started to beat humans. I just have no idea who said it, but I guess it was not a top player at that moment (say Kasparov or Kramnik), but more like some veteran GM.
Just to add more context: the date in which this GM made this statement is very important. I'm sure it was before 2010. On those times engines were stronger than humans (Fritz beat Kramnik on a classical match in 2006), but mainly because of being way superior in tactics. But their evaluation wasn't that good yet. For example, they were very materialistic, and their strategical understanding had some flaws. I guess this GM made the statement based on the idea that he'd need more time to prevent blunders, but that his understanding of the game was way stronger than that of engines.