No wonder Koestler's thesis in this book is that man acts out of his schizophysiology! Man can discern acts that are illogical, inconsistent, or bizarre—but his history tells the story of his illogical, inconsistent acts, and bizarre behavior. For example, if a prisoner under sentence of death attempts to kill himself the day before execution and almost succeeds, prison authorities will give him the best medical care available and postpone the execution until he has recovered so he can be hung in good health.
Man professes love as a virtue and claims adherence to a deity as mentor and giver of all love. Nonetheless, man has been known to persecute, torture, and kill others who worship a variant of the same deity or who worship different deities, all in the name of the deity of love (the Albigensians, Huguenots, Jews, and other "heretics" can attest to that).
Man seeks justice