Some interesting quotes from Hayek:
Probably nothing has done so much harm to the liberal cause as the
wooden insistence of some liberals on certain rough rules of thumb,
above all the principle of laissez-faire.
Hayek, "The Road to Serfdom" p.18 U of Chicago Press 1972
Far from advocating a "minimal state", we find it unquestionable that
in an advanced society government ought to use its power of raising
funds by taxation to provide a number of services which for various
reasons cannot be provided or cannot be provided adequately by the
market.
Hayek, "Law, Legislation, and Liberty" 1982
I am the last person to deny that increased wealth and the increased
density of population have enlarged the number of collective needs
which government can and should statisfy.
Hayek, New Studies