The man who looks for security, even in the mind, is like a man who would chop off his limbs in order to have artificial ones which will give him no pain or trouble.
Sisters define their rivalry in terms of competition for the gold cup of parental love. It is never perceived as a cup which runneth over, rather a finite vessel from which the more one sister drinks, the less is left over for the others.
Sex is a relatively recent addition to the dance of life. For more than 2,000,000,000 years, asexual reproduction was the rule. You know, if you were a creature, you just separated into two clones.