"During the three years which I spent at Cambridge my time was wasted, as far as the academical studies were concerned, as completely as at Edinburgh and at school. I attempted mathematics, and even went, during the summer of 1828, with a private tutor (a very dull man) to Barmouth, but I got on very slowly. The work was repugnant to me chiefly from my not being able to see any meaning in the very early steps in algebra. This impatience was very foolish, and in after years I have deeply regretted that I did not proceed far enough at least to understand something of the great leading principles of mathematics, for men thus endowed seem to have an extra sense.... In order to pass the B.A. examination, it was also necessary to get up Paley's _Evidences of Christianity_, and his _Moral Philosophy_. This was done in a thorough manner, and I am convinced that I could have written out the whole of the _Evidences_ with perfect correctness, but not of course in the clear language of Paley. The logic of this book and, as I may add, of his _Natural Theology_, gave me as much delight as did Euclid. The careful study of these works, without attempting to learn any part by rote, was the only part of the academical course which, as I then felt and as I still believe, was of the least use to me in the education of my mind. I did not at that time trouble myself about Paley's premises, and taking these on trust I was charmed and convinced by the long line of argumentation." One of the great opportunities of Darwin's life came to him when, some time after he had finished his course at Cambridge, he was offered a place as naturalist on the _Beagle_, a ship sent by the English government on a survey. At first Darwin thought he could not go because his father was opposed to the plan. Finally the father said he would consent if any man of common sense should advise his son to go. This common sense man "was found in the person of his uncle, a Josiah Wedgwood, who advised the father to permit his son to go. The voyage has been described by Darwin, and thousands have been interested and profited by the reading. Some of the letters that he wrote to his friends during his trip are also very interesting. Here is one he sent to his cousin, Fox: