The Time Machine by H.G. Wells

The Time Machine: An Invention - Ursula K. Le Guin, W.A. Dwiggins, H.G. Wells

Interesting concept, but the execution fell a bit flat (or old fashioned - it was written in 1895). Central themes, besides the minor time-travel aspect, include how the social class divide and technological innovations have altered humanity. This book provides something to think about.