Wooden-headedness, the source of self-deception, is a factor that plays a remarkably large role in government. It consists in assessing a situation in terms of preconceived fixed notions while ignoring or rejecting any contrary signs. It is acting according to wish while not allowing oneself to be deflected by the facts.
Barbara TuchmanStrong prejudices in an ill-formed mind are hazardous to government, and when combined with a position of power even more so.
Barbara TuchmanWhen every autumn people said it could not last through the winter, and when every spring there was still no end in sight, only the hope that out of it all some good would accrue to mankind kept men and nations fighting. When at last it was over, the war had many diverse results and one dominant one transcending all others: disillusion.
Barbara Tuchman