Dallas Willard

"You can live opposite of what you profess, but you cannot live opposite of what you believe." Whatever you believe about God or about yourself, or about life after death- your beliefs will determine how you live. And your beliefs are dependent on your knowledge, what you know to be true. Or at least, what you think is true. A person can think something is true and be completely wrong. His actions, then, being results of his beliefs, will be wrong actions because they are not based on reality, but on false thinking. The important thing, then, is to know reality, so that you can live in reality.