This small book was originally meant to be a textbook on “Philosophy,” to be used in undergraduate studies in all Indian universities, if made a compulsary subject. The compelling necessity of doing so is made clear in the “Introduction.” Even otherwise, all the educated youth will find this book useful as a guide in life. Fully grown-ups and even elders will find it beneficial to lead themselves and their children. The first five chapters answer all the fundamental problems of life based simply on our common sense and love of truth. The next five chapters teach us how to live in the light of this understanding. The latter half also contains some of the universally acceptable moral teachings culled from world religions.