THE CALL TO SERVICE
of the laboratory instruments appealed to you exactly as does the management of a motor-car or the handling of a shotgun; most young men like to use a machine and to get mechanical results. But as to learning the insatiable love of truth, the precise observation and the inexorable deduction which are essential in the scientist, you probably have not even made a beginning.
IV
I can imagine that some of you will be as little troubled by the insufficiency of science as by the shortcomings of religion; you have heard the call to service, but you understand it as a call to teach. Observing that I am by profession a teacher, you probably think that I have saved up education for the end of my discourse as a happy contrast to those
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