I would probably tap Hellen Keller.

1925 International Convention
Cedar Point, Ohio, USA
June 30, 1925

Dear Lions and Ladies:

I suppose you have heard the legend that represents opportunity as a capricious lady, who knocks at every door but once, and if the door isn’t opened quickly, she passes on, never to return. And that is as it should be. Lovely, desirable ladies won’t wait. You have to go out and grab ‘em.