How far can logic take you?

My mother, studying for her CPA exam, used to say that logic was a step-by-step means of arriving at the wrong answer.

"Every logical position will eventually lead you into trouble, and heresy, and chaos. Every logical position is consistent, but it is logic which is in the human mind, not God's logic. The human mind is finite and cannot grasp eternity, and therefore the finite mind sees the infinite as not graspable coherently. If we could grasp it all coherently, without contradiction, we would be God. The person who insists on being logical to the end winds up in a mess. I am not saying that we should not be rational. I am not anti-intellectual. I am saying that the intellect by itself is helpless to arrive at total truth." --Kenneth L. Pike

Let's keep 1 Cor 1:25 in mind, brothers.