Good advice on Father's Day

Got some great presents from the boys this morning - in two stages, as Matt was at a sleepover last night. This little gem came in the second wave of gifts, and it's full of wisdom such as:

If you can spend a perfectly useless afternoon in a perfectly useless manner, you have learned how to live. (Lin Yutang)

and

Prediction is very difficult, especially about the future. (Niels Bohr)

Top stuff.

Also, this morning for some reason, Andy and George were singing "A message to you, daddy" to the tune of an old Specials song ... where do they get these ideas from, eh?