But with each passing year and each new study, the evidence for the genetic contribution to these [individual and group] differences becomes more firmly established than ever. — J. Philippe Rushton Copy Share Image
![“But with each passing year and each new study, the evidence for the genetic contribution to these [individual and group] differences becomes more firmly established than ever.” quote by J. Philippe Rushton](https://sms4smile.com/quotes/img-quotes/cde/j-philippe-rushton-25237_contribution_but-with-each-passing-year-and-each-new_1159532.jpg)