But logic does not drive constitutions, not in Europe anyway.

ECONOMIST: Beyond Berlin

Issues such as fear, ignorance, superstition and cultural biases drive action in ways that defy logic.

FORBES: Technology, Digital Health and the Frankenstein Syndrome

The deadly logic of addiction -- the drive to acquire oil at all costs -- is experienced with particular ferocity in the oil-producing states of the equatorial region and global south.

CNN: The price of our oil addiction

Price and value, the two opposing ideals which drive equities often seems to be void of logic whenever I see stocks such as Salesforce.com and Amazon carry on to grossly absurd levels.

FORBES: Links 19 Nov: So Why Isn't Apple At $1,000 A Share?

This should, in effect, drive down the cost of procreation and, by the logic of the marketplace, increase its appeal.

NEWYORKER: The Case Against Kids

"The inexorable logic of events, " he predicted, would drive Lincoln to make the eradication of slavery the spear point of the war.

WSJ: Book Review: The Fall of the House of Dixie