The study of the fundamental problems pertaining to knowledge, reason, language, existence and values is known as philosophy. The methods included in this field are questioning, rational argument, critical discussion and systematic presentation. The major branches under which philosophical questions can be categorized are metaphysics, value theory, science, logic and mathematics, epistemology and philosophical traditions. This book is a valuable compilation of topics, ranging from the basic to the most complex theories in the field of philosophy. Some of the diverse topics covered in this book address the varied branches that fall under this discipline. As this field is emerging at a rapid pace, the contents of this book will help the readers understand the modern concepts of the subject.