Our experiences tell that things which seem random today may have an explanation tomorrow. Following the line of belief that there is some cause or reason behind everything, this book proposes causality as the fundamental and ecumenical principle of the universe. Matter and consciousness are regarded as eternal and the causes of the creation of the universe via "causality" have been considered. Along with defining space and time in terms of cause and effect, other important notions in physics have been echoed. Space and time are inevitably entangled via cause and effect. Consequently, everything in this world is correlated with something else. Entanglement, a particular form of correlation, is a useful resource in quantum information. In this regard, some algorithms to create multiparty entanglement are proposed. This book presents thought-provoking ideas on causality, space, time, etc. and is intended for general readers, including scientific minds who are open to reconsidering their viewpoints.