Can one person really make a difference?

On July 6, 1994, one man from South Australia began a ministry. Not a big, or complicated one, but he felt called to give out letterbox cards and signs magazines. In January last year, he gave out his millionth letterbox card!! Now we estimate that he's up to 1, 200,000 cards, and he's still going. We have so many correspondance students because of this mans quiet ministry. He's been able to minster to thousands of people, and see Australia at the same time! Sometimes a local church will help him out with fuel and accommodation expenses for his car and caravan, but God is blessing him with what he needs to make it happen..He's just asked for some more Letterbox cards, as he's run out, and these are provided free of charge from the discovery centre to churches and related individuals.
One more thing... He turned 82 this year!