--Whilst fools one vice condemn, They run into the opposite extreme. CREECH. That wonder is the effect of ignorance, has been often observed. The awful stillness of attention, with which the mind is overspread at the first view of an unexpected effect, ceases when we have leisure to disentangle complications and investigate causes. Wonder is a pause of reason, a sudden cessation of the mental progress, which lasts only while the understanding is fixed upon some single idea, and is at an end when it recovers force enough to divide the object into its parts, or mark the intermediate gradations from the first agent to the last consequence. It may be remarked with equal truth, that ignorance is often the effect of wonder. It is common for those who have never accustomed themselves to the labour of inquiry, nor invigorated their confidence by conquests over difficulty, to sleep in the gloomy quiescence of astonishment, without any effort to animate inquiry, or dispel obscurity. What they cannot immediately conceive, they consider as too high to be reached, or too extensive to be comprehended; they therefore content themselves with the gaze of folly, forbear to attempt what they have no hopes of performing, and resign the pleasure of rational contemplation to more pertinacious study, or more active faculties. Among the productions of mechanick art, many are of a form so different from that of their first materials, and many consist of parts so numerous 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 analyze 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.