This book includes simple definitions of philosophical concepts of great thinkers from around the world.Currently, the latest views of politics and the philosophical aspects of these are not helping any peaceful solutions, with the world powers striving for attention to their megalomaniac ambitions. The remarks that walls must be built to keep immigrants out, trade embargos and leaders of being weak are all negative. 'Fools build walls, wise men build bridges' makes sense and ought to encourage people to read more about political philosophy.This isolationistic attitude can be clearly defined by the psychotherapeutic branch of philosophy. In old age people regress to the earliest stages of their development. Thus Presidents, Prime Ministers and Leaders of Governments bear the same syndromes of regressive behaviour. In feeling omni-powerful the bigger nations take advantage of disagreements and conflicts, when they consider it appropriate to invade and cause havoc among the minorities.