I remember on one of my many visits with Thomas A. Edison…

““I remember on one of my many visits with Thomas A. Edison , I brought up the question of Ingersoll . I asked this great genius what he thought of him, and he replied, 'He was grand.' I told Mr. Edison that I had been invited to deliver a radio address on Ingersoll , and would he be kind enough to write me a short appreciation of him. This he did, and a photostat of that letter is now a part of this house. In it you will read what Mr. Edison wrote. He said: ' I think that Ingersoll had all the attributes of a perfect man, and, in my opinion, no finer personality ever existed …' I mention this as an indication of the tremendous influence Ingersoll had upon the intellectual life of his time. To what extent did Ingersoll influence Edison ? It was Thomas A. Edison 's freedom from the narrow boundaries of theological dogma, and his thorough emancipation from the degrading and stultifying creed of Christianity, that made it possible for him to wrest from nature her most cherished secrets, and bequeath to the human race the richest of legacies. Mr. Edison told me that when Ingersoll visited his laboratories, he made a record of his voice, but stated that the reproductive devices of that time were not as good as those later developed, and, therefore, his magnificent voice was lost to posterity.””

— Joseph Lewis