In a video that will be shown during Twitter's IPO road show, its three founders reminisce over why they built the social network.
"We started Twitter with a very simple idea. We started because we wanted to see it, we loved it and we kept building it because we wanted to see other people use it," Jack Dorsey said.
Dorsey, Biz Stone and Evan Williams are featured in the video, which cleverly runs one minute and 40 seconds or 1:40—echoing the 140 characters allowed in a tweet.
Founded in 2006, Twitter has come a long way, Stone said, but its premise has remained the same.
"We just never thought it would go this way, and I honestly think that is part of the reason why we succeeded," he said. "It's such a simple tool, yet people have done so many amazing things with it."
Twitter's IPO is expected sometime in early November. Its stock will trade under the ticker TWTR on the New York Stock Exchange.
(Read more: Twitter chooses NYSE, eyes Nov. 15 for IPO )
Watch the full video here.
—By CNBC's Cadie Thompson. Follow her on Twitter @CadieThompson.