‘RG LeTourneau is perhaps the most inspiring Christian inventor, businessman and entrepreneur the world has ever seen. A sixth grade dropout, Robert Gilmore “RG” LeTourneau went on to become the leading earth moving machinery manufacturer of his day with plants on 4 continents, more than 300 patents to his name and major contributions to road construction and heavy equipment that forever changed the world.  Most importantly, his contribution to the advancement of the Gospel ranks him among the greatest of Christian Businessmen of all time. Famous for living on 10% of his income and giving 90% to the spread of the Gospel, LeTourneau exemplified what a Christian businessman should be.’ http://www.giantsforgod.com/rg-letourneau/