For a thirty-fifth birthday
I've sometime thought that being thirty-five
  Is as the keystone in the mason's wall
  The final piece of work that ensures all
That went before will thereby strength derive.

The structure being stable he'll contrive
  To use his skills and further works install
  Completing thus the structure to enthrall
The coming generations who survive.

The pattern's set; stability's defined
  The years now past have set your future's way
  And all that comes is squarely in the sway
Of half of three-score years and ten enshrined.

That's how it was when your age was with me
And I can say "The best is yet to be"