What is the theme in The Law of Love by Laura Esquivel?

Another theme is Flesh vs. Spirit. Esquivel defines the Law of Love, which becomes the impetus in the novel for universal peace, as a fusion of the flesh and the spirit, involving a process of reincarnation: "The person who causes an imbalance in the cosmic order is the only one who can restore balance. In nearly all cases, one lifetime is insufficient to achieve that so Nature provides reincarnation in order to give Wreckoncilers the chance to straighten out their screwups. . .again and again they will be born near each other, until finally they learn how to love.