"I play with microbes. There are, of course, many rules to this play...but when you have acquired knowledge and experience it is very pleasant to break the rules and to be able to find something nobody has thought of."

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Religion did not exist for the saving of souls but for the preservation and welfare of society, and in all that was necessary to this end every man had to take his part, or break with the domestic and political community to which he belonged.

— William Robertson Smith