"The difference between this view, [...] and the view which traces all discoverable order to deliberate design is the first great contrast between the true individualism of the British thinkers of the 18th century and the so-called individualism of the Cartesian school. But it is merely one aspect of an even wider difference between a view which in general rates rather low the place which reason plays in human affairs, which contends that man has achieved what he has in spite of the fact he is only partly guided by reason, and that his individual reason is very limited and imperfect, and a view which assumes that Reason, with a capital R, is always fully and equally available to all humans and that everything which man achieves is the direct result of, and therefore subject to, the control of individual reason. One might even say that the former is a product of an acute consciousness of the limitations of the individual mind which induces an attitude of humility toward the impersonal and anonymous social processes by which individuals help to create things greater than they know, while the latter is the product of an exaggerated belief in the powers of individual reason and of a consequent contempt for anything which has not been consciously designed by it or is not fully intelligible to it.
"The anti-rationalistic approach, which regards man not as a highly rational and intelligent but as a very irrational and fallible being, whose individual errors are corrected only in the course of a social process, and which aims at making the best of a very imperfect material, is probably the most characteristic feature of English individualism."
Individualism and Economic Order, pp 6-9.