Charles Darwin:
"During my second year at Edinburgh I attended --'s lectures on
Geology and Zoology, but they were incredibly dull. The sole
effect they produced on me was the determination never as long as
I lived to read a book on Geology, or in any way to study the
science. Yet I feel sure that I was prepared for a philosophical
treatment of the subject; for an old Mr. Cotton in Shropshire,
who knew a good deal about rocks, had pointed out to me two or
three years previously
a well-known large erratic boulder in the
town of Shrewsbury, called the "bell-stone"; he told me that
there was no rock of the same kind nearer than Cumberland or
Scotland, and he solemnly assured me that the world would come to
an end before any one would be able to explain how this stone
came where it now lay. This produced a deep impression on me,
and I meditated over this wonderful stone. So that I felt the
keenest delight when I first read of the action of icebergs in
transporting boulders, and I gloried in the progress of Geology."
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