“Man cannot survive except through his mind. He comes on earth unarmed. His brain is his only weapon. Animals obtain food by force. man had no claws, no fangs, no horns, no great strength of muscle. He must plant his food or hunt it. To plant, he needs a process of thought. To hunt, he needs weapons,and to make weapons - a process of thought. From this simplest necessity to the highest religious abstraction, from the wheel to the skyscraper, everything we are and we have comes from a single attribute of man -the function of his reasoning mind.”

“Man's mind is his basic tool of survival. Life is given to him, survival is not. His body is given to him, its sustenance is not. His mind is given to him, its content is not. To remain alive, he must act, and before he can act he must know the nature and purpose of his action. He cannot obtain his food without a knowledge of food and of the way to obtain it. He cannot dig a ditch-or build a cyclotron-without a knowledge of his aim and of the means to achieve it. To remain alive, he must think”

“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.”

“Now observe that in all the propaganda of the ecologists—amidst all their appeals to nature and pleas for “harmony with nature”—there is no discussion of man’s needs and the requirements of his survival. Man is treated as if he were an unnatural phenomenon. Man cannot survive in the kind of state of nature that the ecologists envision—i.e., on the level of sea urchins or polar bears....In order to survive, man has to discover and produce everything he needs, which means that he has to alter his background and adapt it to his needs. Nature has not equipped him for adapting himself to his background in the manner of animals. From the most primitive cultures to the most advanced civilizations, man has had to manufacture things; his well-being depends on his success at production. The lowest human tribe cannot survive without that alleged source of pollution: fire. It is not merely symbolic that fire was the property of the gods which Prometheus brought to man. The ecologists are the new vultures swarming to extinguish that fire.”

“Man has no automatic code of survival. His particular distinction from all other living species is the necessity to act in the face of alternatives by means of volitional choice. He has no automatic knowledge of what is good for him or evil, what values his life depends on, what course of action it requires. Are you prattling about an instinct of self-preservation? An instinct of self-preservation is precisely what man does not possess. An 'instinct' in as unerring and automatic form of knowledge. A desire is not an instinct. A desire to live does not give you the knowledge required for living. And even man's desire to live is not automatic: your secret evil today is that that is the desire you do not hold. Your fear of death is not a love of life and will not give you the knowledge needed to keep it. Man must obtain his knowledge and choose his actions by a process of thinking, which nature will not force him to perform. Man has the power to act as his own destroyer--and that is the way he has acted through most of history.”

“I like to think of fire held in a man's hand. Fire, a dangerous force, tamed at his fingertips. I often wonder about the hours when a man sits alone, watching the smoke of a cigarette, thinking. I wonder what great things have come from such hours. When a man thinks, there is a spot of fire alive in his mind--and it is proper that he should have the burning point of a cigarette as his one expression.”

“We are born into this world unarmed - our mind is our only weapon.”