61.   He eventually earned a doctorate in mathematics.

62.   He earned doctorates in philosophy from the Aquinas Institute, and in sacred theology from the College of the Immaculate Conception in Washington.

63.   He graduated from Boston Latin School and Harvard University, where he also earned a doctorate.

64.   He graduated from Columbia, then earned his doctorate there.

65.   He graduated from the Technical Institute of Turin and earned a doctorate in physics at the University of Turin, where he studied under Nobel laureate Enrico Fermi.

66.   He graduated from the University of Pennsylvania and was a pilot in the Navy during World War II before earning a doctorate at Columbia University.

67.   He graduated Phi Beta Kappa from New York University and earned a doctorate from Princeton.

68.   He graduated from City College of New York and earned a doctorate in economics at Columbia University.

69.   He graduated from Southern Illinois University and earned a doctorate in molecular biology at Purdue University.

70.   He graduated from Swarthmore College and earned a doctorate at the University of Chicago.