Hayek expressed the greatest praise for Popper. Whether this was Hayek's ultimate view or a reflection of a deep, though subordinate, strain of personal modesty and humility that ran through him is an open question. Hayek's support was vital in Popper's career. During the late 1970s and early 1980s, Hayek was involved with an unsuccessful effort to obtain the Nobel Prize in Literature for Popper.

Hayek's Journey: The Mind of Friedrich Hayek (2003) - Ch. 15 : Karl Popper