Now, that's the kind of flawless logic that makes life with you such a joy!

The analysts had made foolish assumptions, reasoned from them with undoubtedly flawless logic, and ended up worse off than if they'd done nothing at all.

Perhaps there was no flawless logic anywhere.

You used flawless Llurdan logic.

I could not blame T'Pring; I saw that she Let flawless logic over pledge prevail.

Not to mention the cool rationalism and flawless logic of his half-Vulcan first officer, Mr. Spock.

The Borg had many advantages, but one thing they could not escape and that was almost a disadvantage was the nearly flawless logic by which they operated.

So much for flawless logic.

Your flawless logic has convinced me, I'm going to off myself right now!

His prominence as a lawyer parallels his fame as a writer: he was known for his flawless logic and lucidity of mind in both undertakings.