What metaphors are used in The Double Helix by James D. Watson?

In classical intellectual history, however, such as Lovejoy's or Nicolson's, philosophy and science metaphorically play the masculine role and literature always the female role, at least insofar as literature is fertilized by science/ philosophy, and never the reverse. Lovejoy says that philosophy is the "seed-plot" of intellectual history; in Nicolson or Popper it is science