315. Lee Bass
$2.6 billion $ self-made score: source: oil, investments age: 61 residence: fort Worth, tex. m.b.a., u. of Pennsylvania ’82 Bass owns 2 ranches in Texas, where he raises longhorn cattle and breeds rhinos. A committed conservationist, he served 2 terms as chairman of the Texas Parks & Wildlife Commission and cofounded the International Rhino Foundation. In 1991 he gave $20 million to his alma mater, Yale, to support Western civilization studies. Four years later, the school gave the money back and canceled the program after Lee reportedly wanted to approve hires.