So In Every Individual The Two Trends,

Where Id Was, There Ego Shall Be.

If There Are Quarrels Between The Parents Or If Their Marriage Is Unhappy, The Ground Will Be Prepared In Their Children For The Severest Predisposition To A Disturbance Of Sexual Development Or To Neurotic Illness.

Indeed, The Great Leonardo (da Vinci) Remained Like A Child For The Whole Of His Life In More Than One Way. It Is Said That All Great Men Are Bound To Retain Some Infantile Part. Even As An Adult He Continued To Play, And This Was Another Reason Why He Often Appeared Uncanny And Incomprehensible To His Contemporaries.

Against The Suffering Which May Come Upon One From Human Relationships The Readiest Safeguard Is Voluntary Isolation, Keeping Oneself Aloof From Other People. The Happiness Which Can Be Achieved Along This Path Is, As We See, The Happiness Of Quietness. Against The Dreaded External World One Can Only Defend Oneself By Some Kind Of Turning Away From It, If One Intends To Solve The Task By Oneself.

The Most Ancient And Important Taboo Prohibitions Are The Two Basic Laws Of Totemism: Not To Kill The Totem Animal And To Avoid Sexual Intercourse With Members Of The Totem Clan Of The Opposite Sex.