R. Austin Freeman, The Eye of Osiris — IX. The Sphinx of Lincoln's Inn (1911)
“ It is a very unsafe thing, my dear sir, to expound another man's beliefs.""Then you think that John Bellingham is alive?""Do I? Who said so? I did not, you know.""But he must be either dead or alive.""There," said Mr. Jellicoe, "I am entirely with you. You have stated an undeniable truth.""It is not a very illuminating one, however," I replied, laughing."Undeniable truths often are not," he retorted. "They are apt to be extremely general. In fact, I would affirm that the certainty of the truth of a given proposition is directly proportional to its generality." ”
