We are proud of a human nature that could be so passionately extreme, but we shrink from advising others to follow the example. The conduct we blame ourselves for not following lies nearer to the middle line of human effort.
 William James, The Varieties of Religious Experience (1902). copy citation

Context

“We accept a John Howard, a Mazzini, a Botticelli, a Michael Angelo, with a kind of indulgence. We are glad they existed to show us that way, but we are glad there are also other ways of seeing and taking life. So of many of the saints whom we have looked at. We are proud of a human nature that could be so passionately extreme, but we shrink from advising others to follow the example. The conduct we blame ourselves for not following lies nearer to the middle line of human effort. It is less dependent on particular beliefs and doctrines. It is such as wears well in different ages, such as under different skies all judges are able to commend. The fruits of religion, in other words, are, like all human products, liable to corruption by excess.” source