Double Minded Man

When you believe, you are in one mind and accept something as true.
Unbelief is to be of one mind and reject that something is true.
 To doubt is to waver between the two, to believe and disbelieve at the same time, and so to be in "two minds." That is what James calls, in Chapter
1, a '"double minded man," or as the Chinese say, "Doubt is standing in two boats, with one foot in each."

Os Guiness