"If a writer be conscious that to gain a reception for his
favourite doctrine he must combat with certain elements of
opposition, in the taste, or the pride, or the indolence of those
whom he is addressing, this will only serve to make him the more
importunate. _There is a difference between such truths as are
merely of a speculative nature and such as are allied with practice
and moral feeling. With the former all repetition may be often
superfluous; with the latter it may just be by earnest repetition,
that their influence comes to be thoroughly established over the
mind of an inquirer._"--CHALMERS.