It reminds us that a man driven to desire to possess a certain female is a highly purposive individual. We have already noted that evolution tends to mark time when individuals have no reason to evolve. The same applies to individuals; they may be talented and intelligent, and yet waste their lives because they somehow lack the motivation to make use of these faculties. The best piece of luck that can befall any individual is to have a strong sense of purpose.

p. 225 - From Atlantis to the Sphinx (1996)