I recently turned fifty, which is young for a tree, mid-life for an elephant, and ancient for a quarter-miler, whose son now says, "Dad, I just can't run the quarter with you anymore, unless I bring something to read."

How long can you tread water?

The essence of childhood, of course, is play.

If you can find humour in anything, you can survive it

You can not make everybody happy.

You can teach an old dog new tricks. You just don't want to see the dog doing them.

The first time I came across the birds and the bees in actual flight, I couldn't identify the formation.