What great Australian sportsman was responsible for these profound words?

When considering the stature of an athlete or for that matter any person, I set great store in certain qualities which I believe are essential in addition to skill.

They are that the person conduct his or her life with dignity, with integrity and, most of all, with modesty. They are totally compatible with pride, ambition and competitiveness.

I love to see people with personality and character, but I resent utterly the philosophy of those misguided people who think arrogance is a necessary virtue.  It is only endured by the public, not enjoyed.

For the answer, see the letter below.

And here is the signed copy he refers to: