How many words (or lines) are long enough to make someone think about his life but short enough to hook lazy readers?

Question

OK, I know that it depends of what it is written. But I believe that human brain responds to a certain amount of words in different ways. Based on that, how many words (or lines) you think are long enough to make someone think about his life but short enough to hook lazy reader? And what examples of that type of writing exist?

Answer 1

Hemingway did it in six. "For sale: baby shoes, never worn."