The house of delusions (Housman)

Knowledge, and especially disagreeable knowledge, cannot by any art be totally excluded even from those who do not seek it. Wisdom, said Aeschylus long ago, comes to men whether they will or no. The house of delusions is cheap to build, but draughty to live in, and ready at any instant to fall; and it is surely truer prudence to move our furniture betimes into the open air than to stay indoors until our tenement tumbles about our ears. It is and it must in the long run be better for a man to see things as they are than to be ignorant of them.

A. E. Housman