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N° 137. and so nicely adapted to each other, that it is not possible to view them without amazement. But when we enter the shops of artificers, observe the various tools by which every operation is facilitated, and trace the progress of a manufacture through the different hands that, in succession to each other, contribute to its perfection, we soon discover that every single man has an easy task, and that the extremes however remote of natural rudeness and artificial elegance, are joined by a regular concatenation of effects, of which every one is introduced by that which precedes it, and equally introduces that which is to follow.

The same is the state of intellectual and manual performances. Long calculations or complex diagrams affright the timorous and unexperienced from a second view; but if we have skill sufficient to analize them into simple principles, it will be discovered that our fear was groundless. Divide and conquer, is a principle equally just in science as in policy. Complication is a species of confederacy, which, while it continues united, bids defiance to the most active and vigorous intellect; but of which every member is separately weak, and which may therefore be quickly subdued if it can once be broken.

The chief art of learning, as Locke has observed, is to attempt but little at a time. The widest excursions of the mind are made by short flights frequently repeated; the most lofty fabricks of science are formed by the continued accumulation of single propositions.

It often happens, whatever be the cause, that impatience of labour, or dread of miscarriage, seizes