This is the whole para:
The organization ... of social responses makes it possible for the individual to call out in himself not simply a single response of the other but the response, so to speak, of the community as a whole.... As scientists, we will say, one's community consists of all his colleagues, but this community includes anyone who can understand what is said. The same is true of literature. The size of its audience is a functional one; if the achievement of organization is obtained, it may be of any size. Bigness may in this sense be an indication of qualitative achievement (pp. 267-68).
I found this on the scholarly article of Lenox Grey on Arts as a media of communication... I cannot understand what is he trying to say by this