Between friends there is no bribery. ... the relationship of friends is intrinsically fair and equal. Neither feels stronger or more clever or more beautiful than the other.

WE MUST DEVISE A SYSTEM IN WHICH PEACE IS MORE REWARDING THAN WAR.

Throughout history, females have picked providers for males. Males pick anything.

Sometimes, instead of helping people to advance, a discovery or an invention holds them back.

Jealousy is not a barometer by which the depth of love can be read. It merely records the degree of the lover's insecurity.

No society that feeds its children on tales of successful violence can expect them not to believe that violence in the end is rewarded.

In our contemporary world, no one can think or work with a single picture of what a family is. No one can fit all human behavior, all thought and feeling, into a single pattern.