If I had had a daughter, I always knew what I would tell her. First of all, I would try to counter all outdated stereotypical claptrap that girls are commonly told about their sex--that women are valued far more for their sexual characteristics than their character and brains--and encourage her to be a truly independent person. Only knowing who she is herself will she be able to find find her own life's work and make good decisions in choosing a partner and having children.