All the fresh colour had gone out of his face; his eyes were burning, and his lips were twitching with uncontrollable excitement.
"My Lord," he began, in a voice that even Brenda hardly recognised, "like yourself, I have been unable to find any actual error in the lecturer's demonstrations of which I will take permission to call the possibility of the impossible; in other words, that a contradiction in terms can be true and false at one and the same time.

That, my Lord, and ladies, and gentlemen," he went on, raising his voice almost to a shout, "is still, and, I hope, in the interests of true science, and not adroit jugglery with figures and formulae, will ever remain, another impossibility.

Professor Marmion has apparently trisected the triangle, squared the circle, and doubled the cube.

It may be that he has persuaded some present that he really has done so; but, again, in the interests of science, I desire to protest against the way in which these demonstrations have been sprung upon us.

Calculations which he has doubtless taken months to elaborate, he has asked us to test in a few minutes.