The research on human intelligence is based on almost all disciplines of modern science. The following questions must be answered: What is information? How does information processing emerge? Can we trace the long and tortuous path of biotic evolution from reflex, through instinct, towards intelligence? The brain, as the most complex system of macro- and micro-structures, unifies energetic, electrical and chemical phenomena and carries human intelligence. Brain functions include memory, emotions, attention, etc. Are there gender differences? Speech, self-consciousness and the feeling of free...