It is the oldest trope in personal technology. But looked at with fresh eyes fully 35 years later, Alan Kay's most quotable of quotes takes on new meaning. And I don't think it means what it used to mean.
"People who are really serious about software should make their own hardware," Alan Kay is quoted as saying in 1982. The quote is in good company, too: Kay is famous for many other similar quips, including "the best way to predict the future is to invent it" and "better is the enemy of best" (the latter of which is a skewed take on the adage, "perfect is the enemy of good").