The possession of knowledge, and an happy talent of communicating
knowledge, are qualifications seldom united in the same person; nor is
it altogether easy to determine from which of them, separately, a reader
would chuse to accept, with preference, a treatise upon any subject.
From the one we receive even little information with much satisfaction;
while any improvement extracted from the other is obtained with labour,
and, perhaps too, even with disgust.
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