Abstract
Nicholas Agar advocates some enhancements to human beings toward peak levels that already exist among us. That is clear in his 2004 book, Liberal Eugenics: In Defence of Human Enhancement. However, he is against radical enhancement of athletic prowess beyond our current top sprinters, of intellect beyond Einstein, and length of life beyond the current record of 122 years. He sees changes of such magnitude producing eventually a new species that would leave behind much that is good about human existence. Agar unfolds his argument in engagement with four transhumanists who cheerfully call for the radical enhancement he rejects.