Here's a quote from religioustolerance.org -
"Men never do evil so completely and cheerfully as when they do it from religious conviction." Blaise Pascal
Here's another one - (religious intolerance?)
You say you're supposed to be nice to the Episcopalians and the Presbyterians and the Methodists and this, that, and the other thing. Nonsense. I don't have to be nice to the spirit of the Antichrist. I can love the people who hold false opinions but I don't have to be nice to them" Pat Robertson, Fundamentalist Christian tele-minister.
Here's another good one 'Remember the Golden Rule'
Christianity's main rule of human behavior, the Golden Rule, tells its followers to treat other people as they would wish to be treated. This is called the "Ethic of Reciprocity" and is found in various forms in almost all other world religions. Yet, even a casual examination of today's newspaper will show that religion is often a cause of intolerance, hatred, mass crimes against humanity, and genocide. In the past decade, such behavior has occurred in Northern Ireland, Bosnia, Kosovo, Macedonia, Cyprus, Nigeria, Sudan, Middle East, Iraq/Iran, Afghanistan, India, Sri Lanka, Pakistan, Philippines, and other countries. Even the United States is not free of religious hatred. In recent decades, there were three remarkable events -- all perpetrated by Fundamentalist Christians: a lynching of a Wiccan, a call for the napalming of all Wiccans, and an attempted mass stoning of demonstrators advocating for religious freedom.
This is something I have been thinking about for a long time. I am glad to find something about it on the internet.