[Rumsfield's] reply included a complex formulation that would become inextricably associated with him: 'There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
I am convinced that the act of thinking logically cannot possibly be natural to the human mind. If it were, then mathematics would be everybody's easiest course at school and our species would not have taken several millennia to figure out the scientific method.
Using the scientific knowledge that we currently possess, we can take simple logical steps, backed by the strongest evidence that we have, to come to the best and most reasonable conclusion that God is the cause of everything - all without ever taking even a single step of blind faith.