MacLean divides the Triune brain[5] into three parts that developed over the evolutionary eons. The oldest, which he calls the reptilian brain, controls aggression and passionate impulsiveness. The middle region, the limbic system, controls docile, loving emotions. The outer region, the neo-cortex controls thoughtful planning with an awareness of consequences and cause-effect relationships. This phenomenon is important because fear alone can inhibit successful higher level thinking by keeping the brain at the lowest (reptilian) level preparing to meet the threat. The educator Lev Vygotsky stressed the importance of creating and maintaining a risk-free environment that encourages higher level (neo-cortex) thought.[6] The growing recognition of the Triune Brain might very well have influenced world politics in the replacement of the policy of "mutually assured destruction" with a "kinder and gentler" statesmanship. Maslow's need and MacLean's brain are both related to animal-like behavioral weaknesses when we react impulsively rather than with thought and planning, and we are more likely to act impulsively when our physical safety or food and shelter needs are threatened. When we do act like animals, we often are ashamed because we momentarily set aside our conscience. Fear overpowers our desire to be loving because it engages lower brain centers that are not controlled by abstract thought centers in the higher levels of our brain. How then can we act like we are created in the image of God instead of selfish, impulsive animals? We can begin by analyzing what characters in literature and drama do. We can recognize when fear, arrogance, laziness, or loneliness drives the hero's actions, and imagine how the hero might overcome his weaknesses. We can project a responsible resolution to the hero's internal conflicts. This exercise of recognizing the source of another's actions is merely an intermediate step in the learning process, however.[7] The final step is when we face our own trails, and face the need to analyze our own reactions to stress, as we have looked at those in dramas. Finally, we can plan our own future and make it happen, just as we did with alternative endings to conflicts in dramas. Occasionally, people face moral choices that seem to confusing to be solved, and the thinking brain tries to step down a notch. It either takes a passive emotional position with MacLean's limbic system, or an impulsive aggressive position with the reptilian system. At these times, a checklist for moral decision making can provide a framework for keeping our actions in the realm of planned activity rather than impulse. The Steps of Moral Decision Making. Moral decision making involves several growth steps in reaching maturity. Stanley Kohlberg[8] provided us with a framework for making moral decisions: Age Test Question 6 Punishment Will I get caught?