Care must also be taken, that a _Genius_ be not overstrain'd. Our
Powers are limited. None can carry beyond their certain Weight.
Whilst we follow Inclination, and keep within the Bounds of our
Power, we act with Ease and Pleasure. If we strain beyond our
Power, we crack the Sinews, and after two or three vain Efforts,
our Strength fails, and our Spirits are jaded. It wou'd be of
mighty Advantage towards improving a _Genius_, to make its
Employment, as much as possible, a Delight and Diversion,
especially to young Minds. A Man toils at a Task, and finds his
Spirits flag, and his Force abate, e'er he has gone half thro';
whereas he can put forth twice the Strength, and complain of no
Fatigue, in following his Pleasures. Of so much Advantage is it
to make Business a Pleasure, if possible, and engage the Mind in
it out of Choice. It naturally reluctates against Constraint, and
is most unwilling to go on when it knows it _must_. But if it be
left to its own Choice, to follow Inclination and pursue its
Pleasure, it goes on without any Rubs, and rids twice the Ground,
without being half so much tired.

Exercise is also very necessary to improve a _Genius_. It not
only shines the more, by exerting it self, but, like the Limbs of
an Humane Body, gathers Strength by frequent and vigorous Use,
and becomes more pliable and ready for Action. There must indeed
sometimes be a Relaxation. Our Minds will not at present bear to
be continually bent, and in perpetual Exercise. But our Faculties
manifestly grow by using them. The more we exert our selves, if
we do not overstrain our Powers, the greater Readiness and
Ability we acquire for future Action. A _Genius_, in order to be
much improv'd, should be well workt, and kept in close
Application to its proper Pursuit.