This book presents a unique perspective into human rationality. It orbits around the idea that logical necessity is a human concept AND that it is absolute. It offers a “strict” notion of necessity as a primitive and inborn notion, and, as such, a fundament of human cognition and constitutive of rational thought. From this perspective, we then examine some of the major ramifications for a host of major philosophical topics such as logic, intuition, truth, rules, beauty, and the concept of God. For far too long, contemporary Western philosophy has been dominated by a generally relativistic, pluralistic and skeptic attitude. This has led to the “my truth, your truth” position of post-modernism, culminating in the “post-truth” frenzy of 2016. This book is an attempt to put a dent in that paradigm. As Wittgenstein says in Philosophical Investigations (§415), this book is intended to contribute “observations which no one has doubted, but which have escaped remark only because they are always before our eyes”.