No, it's not just an article in old Dragon magazines. It's from the Good Book, and it's a very inspiring passage for those of us who play RPGs. Check this out - I expected to hear Mako's voice saying "Those were the days of High Adventure!"
"There were giants on the earth in those days, and also afterward, when the sons of God came in to the daughters of men and they bore children to them. Those were the mighty men who were of old, men of renown." (Genesis 6:4 NKJV)
That's just awesome. It makes me want to roll d20s.