He's fourteen today.
Time flies by really terribly fast. I scoffed at this idea years ago but it's true: one minute he's itty-bitty and gumming things and the next he's climbing trees and a few minutes from now he'll be off doing grown-up things and living his own life.
Which is the way it should be.
But grab on to those moments and hold 'em tight. They don't hang around forever.