… is from page 73 of F.A. Hayek’s brilliant chapter 3 (“The Creative Powers of a Free Civilization”) of the Definitive Edition (Ronald Hamowy, ed., 2011) of Hayek’s 1960 volume, The Constitution of Liberty:
Most of the advantages of social life, especially in its more advanced forms which we call “civilization,” rest on the fact that the individual benefits from more knowledge than he is aware of. It might be said that civilization begins when the individual in the pursuit of his ends can make use of more knowledge than he has himself acquired and when he can transcend the boundaries of his ignorance by profiting from knowledge he does not himself possess.