Stumbled upon this quote the other day. I quite like it:

“To us, the moment 8:17 A.M. means something—something very important, if it happens to be the starting time of our daily train. To our ancestors such an odd eccentric instant was without significance—did not even exist. In inventing the locomotive, [James] Watt and [George] Stephenson were part inventors of time.” –Aldous Huxley

Contrast this with: Leap Second crashes half the internet