In a prefatory letter prefixed to the volume entitled _Dr. Livingstone's Cambridge Lectures_, the late Professor Sedgwick remarked, in connection with this event, that in the course of a long academic life he had often been present in the senate-house on exciting occasions; in the days of Napoleon he had heard the greetings given to our great military heroes; he had been present at four installation services, the last of which was graced by the presence of the Queen, when her youthful husband was installed as Chancellor, amid the most fervent gratulations that subjects are permitted to exhibit in the presence of their Sovereign. But on none of these occasions "were the gratulations of the University more honest and true-hearted than those which were offered to Dr. Livingstone. He came among us without any long notes of preparation, without any pageant or eloquence to charm and captivate our senses. He stood before us, a plain, single-minded man, somewhat attenuated by years of toil, and with a face tinged by the sun of Africa.... While we listened to the tale he had to tell, there arose in the hearts of all the listeners a fervent hope that the hand of God which had so long upheld him would uphold him still, and help him to carry out the great work of Christian love that was still before him." Next day, December 5th, Dr. Livingstone addressed a very crowded audience in the Town Hall, the Mayor presiding. Referring to his own plans, he said: "I contend that we ought not to be ashamed of our religion, and had we not kept this so much out of sight in India, we should not now be in such straits in that country" [referring to the Indian Mutiny]. "Let us appear just what we are. For my own part, I intend to go out as a missionary, and hope boldly, but with civility, to state the truth of Christianity, and my belief that those who do not possess it are in error. My object in Africa is not only the elevation of man, but that the country might be so opened that man might see the need of his soul's salvation. I propose in my next expedition to visit the Zambesi, and propitiate the different chiefs along its banks, endeavoring to induce them to cultivate cotton, and to abolish the slave-trade: already they trade in ivory and gold-dust, and are anxious to extend their commercial operations. There is thus a probability of their interests being linked with ours, and thus the elevation of the African would be the result, "I believe England is alive to her duty of civilizing and Christianizing the heathen. We cannot all go out as missionaries, it is true; but we may all do something toward providing a substitute. Moreover, all may especially do that which every missionary highly prizes, viz.--COMMEND THE WORK IN THEIR PRAYERS. I HOPE THAT THOSE WHOM I NOW ADDRESS WILL BOTH PRAY FOR AND HELP THOSE WHO ARE THEIR SUBSTITUTES."