"Begin challenging your own assumptions. Your assumptions are your windows on the world. Scrub them off every once in awhile, or the light won’t come in. -Alan Alda
Going with our own assumptions is one of the natural barriers we have that can inhibit critical thinking. This happens every day and is automated. What isn't automated is your ability to untangle assumptions from facts and to take time to ask more questions before reacting or before making an important decision.
Plenty of good things are done in the name of religion, and plenty of bad things too. But what is religion, exactly — is it good or bad, in and of itself? Philosopher Kwame Anthony Appiah offers a generous, surprising view.