Scientist Quotes and aphorisms about lead Barry Commoner H. Robert Horvitz K. Eric Drexler Rana el Kaliouby S. Jay Olshansky ,, While eliminating smallpox and curtailing cholera added decades of life to vast populations, cures ... Yusuf Hamied Luc Montagnier Ben Carson Neil deGrasse Tyson Neil deGrasse Tyson