As the seasons change and we settle into autumn, I'm reminded once more that yet another year will soon pass and that we're all getting older. Or at least, the old people are. Check out the images below, picturing tech luminaries in their youths juxtaposed with more recent photos. You might find yourself in disagreement with the English poet John Donne, who wrote: "No spring, nor summer beauty hath such grace as I have seen in one autumnal face."Young Steve Jobs, Apple cofounder:

Jobs, older and thinner:

Young Bill Gates, Microsoft CEO:

Old Bill Gates, philanthropist:

Young Eric Schmidt, before he was Google's CEO:

Old Eric Schmidt:

Young Larry Ellison, Oracle CEO:

Old Larry Ellison:

Young Netscape cofounder Marc Andreessen:

Not quite as young Ning cofounder Marc Andreessen:

Only one man has escaped the effects of time. That is, of course, Microsoft CEO Steve Ballmer: