In fact, the vast majority of proofs in written mathematics can be considered as applications of rigorous informal logic.

Schumpeter coined an expression Ricardian vice, which indicates that rigorous logic does not provide a good economic theory.

I think it has developed a third sense, in current use not yet reported but useful: "subtle, intricate moralistic reasoning, informed by a rigorous logic."

He did not care about being rigorous and disliked logic.

Since there was no third alternative, the proposition is proved by rigorous logic.

Myths after all had their own rigorous logic, as Levi-Strauss had shown.

Nathan's style is noted for its speed, skilled debate, and rigorous logic.

She brings to these scenes the same rigorous narrative logic, the same unsparing extrapolation from premise to consequences that distinguishes her more conventional science fiction.

Eccentric as it is, the fable has a rigorous interior logic that puzzle aficionados should enjoy deciphering.

"With physical comedy, there has to be a very rigorous logic."