That particular expression likewise of the face, or movement of a feature which becomes one person, shall be disagreeable in another, just as such expressions or turns chance to fall in with lines of beauty, or the reverse; for this reason there are pretty frowns and disagreeable smiles: the lines that form a pleasing smile about the corners of the mouth have gentle windings, as fig. [108 L p. II], but lose their beauty in the full laugh, as fig. [109 L p. II], the expression of excessive laughter, oftener than any other, gives a sensible face a silly or disagreeable look, as it is apt to form regular plain lines about the mouth, like a parenthesis, which sometimes appears like crying; as, on the contrary, I remember to have seen a beggar who had clouted up his head very artfully, and whose visage was thin and pale enough to excite pity, but his features were otherwise so unfortunately form'd for his purpose, that what he intended for a grin of pain and misery, was rather a joyous laugh. [Illustration: Figs. 108 and 109] It is strange that nature hath afforded us so many lines and shapes to indicate the deficiencies and blemishes of the mind, whilst there are none at all that point out the perfections of it beyond the appearance of common sense and placidity. Deportment, words, and actions, must speak the good, the wise, the witty, the humane, the generous, the merciful, and the brave. Nor are gravity and solemn looks always signs of wisdom: the mind much occupied with trifles will occasion as grave and sagacious an aspect, as if it were charged with matters of the utmost moment; the balance-master's attention to a single point, in order to preserve his balance, may look as wise at that time as the greatest philosopher in the depth of his studies. All that the ancient sculptors could do, notwithstanding their enthusiastic endeavours to raise the characters of their deities to aspects of sagacity above human, was to give them features of beauty. Their god of wisdom hath no more in his look than a handsom manliness; the Jupiter is carried somewhat higher, by giving it a little more severity than the Apollo, by a larger prominency of brow gently bending in seeming thoughtfulness, with an ample beard, which being added to the noble quantity of its other lines, invests that capital piece of sculpture with uncommon dignity, which, in the mysterious language of a profound connoisseur, is stiled a divine idea, inconceivably great, and above nature. 3dly and lastly, I shall shew in what manner the lines of the face alter from infancy upwards, and specify the different ages. We are now to pay most attention to _simplicity_, as the difference of ages we are about to speak of, turn chiefly upon the use made of this principle in a greater or less degree, in the form of the lines.