I gave him the obvious answer: "Later!"
He asked again and I replied the same again.
I was finishing one of the e-mails that suddenly it occurs to me, Why?! Why by default my answer to him should always be "Later!"? The e-mails are always there, the To Do List never ends, but how many more years my son might come to me and ask me to go cycling with him?
I closed the laptop (the e-mail was not completed yet) and said to him: "Let's go". ...
... The wind was playing a music in my ears while my bike was going fast downhill. I could see my son just a short distance from me happily trying to control his small bicycle while occasionally turning back his head to make sure I was following him.
And I was thinking, this, this very moment might be the happiest and the most fruitful moment of my life.