The Interactions Between Instinct and Intellect and its Impact on Human Behavior Length: 286 Pages I argue that human affairs divide into the two categories of serious affairs and fun affairs. The pleasure seeking aspect of humanity mostly revolves around fun, compassion, amazement and amusement, and sexuality that together constitute humans' Playful Mind, covered in this book. As Shakespeare says, "to be human is to play." Different instincts constantly precipitate varying human interests and energize all human emotions and compel them to interact. For example, the artists through their endless beautiful arts and athletes through their amazing athletic abilities purge life of boredom and render life endlessly joyous and pleasing. There are those who says, heaven belongs to mothers, but I say while that is true, it also belongs to great artists and athletes. However, without understanding what inner forces make these phenomena compellingly captivating for humans we will continue to enjoy them without properly understanding what it is that we so enjoy. In that, humans have enjoyed arts and sports for millennia without being able to articulate exactly what in these seemingly frivolous activities so engrosses these superbly intelligent and purposeful beings, humans. Hence, we have been relishing that which we do not understand at all. To use another example in the realm of human sexuality, over 90% of both genders have sexual fantasies that create a unique brand of human psychology of its own. Yet the origin of this fascinating and universally prevalent human mental phenomenon is yet to be explained in a meaningful way. This study, The Interactions Between Instinct and Intellect and its Impact on Human Behavior, for the first time unveils all these and more of human mysteries and renders humans naked, so to speak.