The Fundamental Science Philosophy is a well coordinated and systematised attempt at evaluating life and the universe as a whole, with reference to first principles that underlie all things as their causes and are implicit in all experience. Philosophy investigates the very possibility and conditions of knowledge, its extent, nature and value. It bases itself on facts already known and rises above them to absolute verities, on which all phenomena depend and by which alone they can be rationally explained. It is not circumscribed by the limitations of the past, present and future, by the laws of this place or that country, but refers to all times, places and conditions. Philosophy is the most inclusive of all branches of learning, and acts as a touchstone to all other aspects of human knowledge.
Philosophy is a rational enquiry into the forms, contents and implications of experience.
It is an attempt at a complete knowledge of being in all the phases of its manifestation in the various processes of consciousness. The discovery of the ultimate meaning and essence of existence is the central purpose of philosophy. It is the art of the perfect life, the science of reality, the foundation of the practice of righteousness, the law of the attainment of freedom and bliss, and provides a key to the meaning and appreciation of beauty. Swami Sivananda holds philosophy to be the Vedanta or the consummation of knowledge, Brahmavidya, or the sacred lore of the Eternal, which is inseparable from Yogasastra, or the methodology of the ascent of the finite to the infinite. It is the way to the knowledge of being as such, of that which is.