"He who speaks without modesty will find it difficult to make his words good." The Analects of Confucius

“Ineffective people live day after day with unused potential.” The 7 Habits Of Highly Effective People

In particular, while natural selection favors both males and females that leave many offspring, the best strategy for doing so may be different for fathers and mothers. That generates a built-in conflict between the parents, a conclusion that all too many humans don’t need scientists to reveal to them. We make jokes about the battle of the sexes, but the battle is neither a joke nor an aberrant accident of how individual fathers or mothers behave on particular occasions. It is indeed perfectly true that behavior that is in a male’s genetic interests may not necessarily be in the interests of his female co-parent, and vice versa. That cruel fact is one of the fundamental causes of human misery. Why Is Sex Fun?: The Evolution of Human Sexuality

Principles have no real force except when one is well fed. Adam's Diary