George W. Bush speechwriter: The conservative mind has become diseased

The conservative mind, in some very visible cases, has become diseased. The movement has been seized by a kind of discrediting madness, in which conspiracy delusions figure prominently. Institutions and individuals that once served an important ideological role, providing a balance to media bias, are discrediting themselves in crucial ways. With the blessings of a president, they have abandoned the normal constraints of reason and compassion.

— Michael Gerson, former chief speechwriter for George W. Bush: The conservative mind has become diseased (The Washington Post)