Dialogue

 1 Intro|  written the first work on the Five Solids. But no early authority
 2 Intro|     may err in the addition of five and seven. And observe that
 3 Intro|     the ancients, speak of the five senses, and of a sense,
 4 Intro| immediate or intuitive. Of the five senses, two—the sight and
 5 Intro|     the external world. It has five or six natural states or
 6  Thea|       as the roots of three or five, showing that they are incommensurable
 7  Thea|     numbers, such as three and five, and every other number
 8  Thea|        put before his own mind five and seven,—I do not mean
 9  Thea|       and seven,—I do not mean five or seven men or horses,
10  Thea|       seven men or horses, but five or seven in the abstract,
11  Thea|     say one, two, three, four, five, six; or when we say twice