“The lower conscious species may be said to survive by “instinct,” if the term means an unchosen and unerring form of action (unerring within the limits of its range). Sensations and percepts are unchosen and unerring. An instinct, however—whether of self-preservation or anything else—is precisely what a conceptual being does not have. Man cannot function or survive by the guidance of mere sensations or percepts. A conceptual being cannot initiate action unless he knows the nature and purpose of his action. He cannot pursue a goal unless he identifies what his goal is and how to achieve it. No species can survive by regressing to the methods of more primitive organisms.”
— Leonard Peikoff, “O.P.A.R.”, pages 193-194.
(Sanichar, the “wolf-boy”, forces us to think what really makes us men. If reason is our basic means of survival, and we have no instincts, how did he survive?”)
As I said in my crazy post about “Dune“, reason is the word of Objectivism. Chapter 5 of O.P.A.R. established that it is only through reason (not emotions) that we acquire knowledge about the world; and Chapter 6 has established that it is only through reason that man survives. I will no longer delve into (i) for now, but I think (ii) needs a little more attention.