Neil deGrasse Tyson quotes and aphorisms about how Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson Neil deGrasse Tyson ,, You've never seen me debate anybody. On anything. Ever. My investment of time, as an educator, in m... Neil deGrasse Tyson ,, Half of my library are old books because I like seeing how people thought about their world at thei... Neil deGrasse Tyson