It is a good rule always to
keep the memoranda obtained in accomplishing a result of this kind; so
that if further information is required, the whole investigation need
not be made over.
This remark suggests another line of thought. Some young men with
quick perceptions get in the way at school of trusting their memories,
and omit making complete notes of lectures or of the various tests
illustrating their studies. This carelessness follows them into after
life, and there are instances where young men, who can make certain
kinds of investigations much better than their fellows, and promptly
give a statement of the general nature of the results, have, when
called on afterward for the details, forgotten then entirely, and
their notes and memoranda, if preserved, being of little use, the
labor is entirely lost. Such men necessarily have to learn more
careful ways in after life. It is a good rule in this, as in the
previous case, to make and copy complete records of everything in such
shape that they may be convenient for reference and criticism
afterward.
One of the important problems with which you will have to deal in the
future is the labor question, and it is probable that your very first
experience with it may be in direct antagonism with the opinions of
many with whom you have heretofore been associated.
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