Philosophy studies the fundamental nature of existence, of man, and of man’s relationship to existence. As against the special sciences, which deal only with particular aspects, philosophy deals with those aspects of the universe which pertain to everything that exists. In the realm of cognition, the special sciences are the trees, but philosophy is the soil which makes the forest possible.

Philosophy is the science that studies the fundamental aspects of the nature of existence. The task of philosophy is to provide man with a comprehensive view of life. This view serves as a base, a frame of reference, for all his actions, mental or physical, psychological or existential. This view tells him the nature of the universe with which he has to deal (metaphysics); the means by which he is to deal with it, i.e., the means of acquiring knowledge (epistemology); the standards by which he is to choose his goals and values, in regard to his own life and character (ethics) — and in regard to society (politics); the means of concretizing this view is given to him by esthetics.

In order to live, man must act; in order to act, he must make choices; in order to make choices, he must define a code of values; in order to define a code of values, he must know what he is and where he is — i.e., he must know his own nature (including his means of knowledge) and the nature of the universe in which he acts — i.e., he needs metaphysics, epistemology, ethics, which means: philosophy. He cannot escape from this need; his only alternative is whether the philosophy guiding him is to be chosen by his mind or by chance.

The Romantic Manifesto, 30

As a human being, you have no choice about the fact that you need a philosophy. Your only choice is whether you define your philosophy by a conscious, rational, disciplined process of thought and scrupulously logical deliberation — or let your subconscious accumulate a junk heap of unwarranted conclusions, false generalizations, undefined contradictions, undigested slogans, unidentified wishes, doubts and fears, thrown together by chance, but integrated by your subconscious into a kind of mongrel philosophy and fused into a single, solid weight: self-doubt, like a ball and chain in the place where your mind’s wings should have grown.

The men who are not interested in philosophy need it most urgently: they are most helplessly in its power.

The men who are not interested in philosophy absorb its principles from the cultural atmosphere around them — from schools, colleges, books, magazines, newspapers, movies, television, etc. Who sets the tone of a culture? A small handful of men: the philosophers. Others follow their lead, either by conviction or by default.

Philosophy is a necessity for a rational being: philosophy is the foundation of science, the organizer of man’s mind, the integrator of his knowledge, the programmer of his subconscious, the selector of his values.

“From the Horse’s Mouth”
Philosophy: Who Needs It, 82

Just as a man’s actions are preceded and determined by some form of idea in his mind, so a society’s existential conditions are preceded and determined by the ascendancy of a certain philosophy among those whose job is to deal with ideas. The events of any given period of history are the result of the thinking of the preceding period.

“For the New Intellectual”
For the New Intellectual, 28

The power that determines the establishment, the changes, the evolution, and the destruction of social systems is philosophy. The role of chance, accident, or tradition, in this context, is the same as their role in the life of an individual: their power stands in inverse ratio to the power of a culture’s (or an individual’s) philosophical equipment, and grows as philosophy collapses. It is, therefore, by reference to philosophy that the character of a social system has to be defined and evaluated.

The present state of the world is not the proof of philosophy’s impotence, but the proof of philosophy’s power. It is philosophy that has brought men to this state — it is only philosophy that can lead them out.

“For the New Intellectual”
For the New Intellectual, 50

In philosophy, the fundamentals are metaphysics and epistemology. On the basis of a knowable universe and of a rational faculty’s competence to grasp it, you can define man’s proper ethics, politics and esthetics. (And if you make an error, you retain the means and the frame of reference necessary to correct it.) But what will you accomplish if you advocate honesty in ethics, while telling men that there is no such thing as truth, fact or reality? What will you do if you advocate political freedom on the grounds that you feel it is good, and find yourself confronting an ambitious thug who declares that he feels quite differently?

The layman’s error, in regard to philosophy, is the tendency to accept consequences while ignoring their causes — to take the end result of a long sequence of thought as the given and to regard it as “self-evident” or as an irreducible primary, while negating its preconditions.

“Philosophical Detection”
Philosophy: Who Needs It, 12

Philosophy provides man with a comprehensive view of life. In order to evaluate it properly, ask yourself what a given theory, if accepted, would do to a human life, starting with your own.

“Philosophical Detection”
Philosophy: Who Needs It, 16

Man came into his own in Greece, some two-and-a-half thousand years ago. The birth of philosophy marked his adulthood; not the content of any particular system of philosophy, but deeper: the concept of philosophy — the realization that a comprehensive view of existence is to be reached by man’s mind.

Philosophy is the goal toward which religion was only a helplessly blind groping. The grandeur, the reverence, the exalted purity, the austere dedication to the pursuit of truth, which are commonly associated with religion, should properly belong to the field of philosophy. Aristotle lived up to it and, in part, so did Plato, Aquinas, Spinoza — but how many others? It is earlier than we think.

If you observe that ever since Hume and Kant (mainly Kant, because Hume was merely the Bertrand Russell of his time) philosophy has been striving to prove that man’s mind is impotent, that there’s no such thing as reality and we wouldn’t be able to perceive it if there were — you will realize the magnitude of the treason involved.

The foundation of any culture, the source responsible for all of its manifestations, is its philosophy. What does modern philosophy offer us? Virtually the only point of agreement among today’s leading philosophers is that there is no such thing as philosophy — and that this knowledge constitutes their claim to the title of philosophers. With a hysterical virulence, strange in advocates of skepticism, they insist that there can be no valid philosophical systems (i.e., there can be no integrated, consistent, comprehensive view of existence) — that there are no answers to fundamental questions — there is no such thing as truth — there is no such thing as reason, and the battle is only over what should replace it: “linguistic games” or unbridled feelings?

If, in the course of philosophical detection, you find yourself, at times, stopped by the indignantly bewildered question: “How could anyone arrive at such nonsense?” — you will begin to understand it when you discover that evil philosophies are systems of rationalization.

“Philosophical Detection”
Philosophy: Who Needs It, 18

Even though philosophy is held in a (today) well-earned contempt by the other college departments, it is philosophy that determines the nature and direction of all the other courses, because it is philosophy that formulates the principles of epistemology, i.e., the rules by which men are to acquire knowledge. The influence of the dominant philosophic theories permeates every other department, including the physical sciences.

Philosophy is the foundation of science; epistemology is the foundation of philosophy. It is with a new approach to epistemology that the rebirth of philosophy has to begin.

“The Cognitive Role of Concepts”
Introduction to Objectivist Epistemology, 74
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