The early Christian philosopher St. Augustine said, Faith is to believe what you do not see; the reward of this faith is to see what you believe. For centuries, people have looked to a higher being to provide answers, help, and even miracles. Faith and positive thinking are closely related but not the same. In some instances, believers have claimed to have had visions of angels. Others believe in the power of faith to heal, or that God can give revelations about what the future holds.