There is a trade off - as you grow older you gain wisdom but you lose spontaneity.

We are happier in many ways when we are old than when we were young. The young sow wild oats. The old grow sage.

There's a vintage which comes with age and experience.

My opportunities were still there, nay, they multiplied tenfold; but the strength and youth to cope with them began to fail, and to need eking out with the shifty cunning of experience.

You take all the experience and judgment of men over 50 out of the world and there wouldn't be enough left to run it.

Any attempts at autobiography before the age of eighty seem pretty self-involved to me. There are a lot of smart middle aged people but not many wise ones.