Extension abstract from sensible qualities is no sensation, I grant; but then there is no such idea, as any one may try(59). There is onely a considering the number of points without the sort of them, & this makes more for me, since it must be in a considering thing. Mem. Before I have shewn the distinction between visible & tangible extension, I must not mention them as distinct. I must not mention M. T. & M. V., but in general M. S., &c.(60) Qu. whether a M. V. be of any colour? a M. T. of any tangible quality? If visible extension be the object of geometry, ’tis that which is survey’d by the optique axis. (M19) I may say the pain is _in_ my finger, &c., according to my doctrine(61). ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Mem. Nicely to discuss wt is meant when we say a line consists of a certain number of inches or points, &c.; a circle of a certain number of square inches, points, &c. Certainly we may think of a circle, or have its idea in our mind, without thinking of points or square inches, &c.; whereas it should seem the idea of a circle is not made up of the ideas of points, square inches, &c. Qu. Is any more than this meant by the foregoing expressions, viz. that squares or points may be perceived in or made out of a circle, &c., or that squares, points, &c. are actually in it, i.e. are perceivable in it? A line in abstract, or Distance, is the number of points between two points. There is also distance between a slave & an emperor, between a peasant & philosopher, between a drachm & a pound, a farthing & a crown, &c.; in all which Distance signifies the number of intermediate ideas. Halley’s doctrine about the proportion between infinitely great quantities vanishes. When men speak of infinite quantities, either they mean finite quantities, or else talk of [that whereof they have(62)] no idea; both which are absurd. If the disputations of the Schoolmen are blam’d for intricacy, triflingness, & confusion, yet it must be acknowledg’d that in the main they treated of great & important subjects. If we admire the method & acuteness of the Math[ematicians]—the length, the subtilty, the exactness of their demonstrations—we must nevertheless be forced to grant that they are for the most part about trifling subjects, and perhaps mean nothing at all. Motion on 2d thoughts seems to be a simple idea. (M20) Motion distinct from ye thing moved is not conceivable. (M21) Mem. To take notice of Newton for defining it [motion]; also of Locke’s wisdom in leaving it undefin’d(63). Ut ordo partium temporis est immutabilis, sin etiam ordo partium spatii. Moveantur hæ de locis suis, et movebuntur (ut ita dicam) de seipsis. Truly number is immensurable. That we will allow with Newton. (M22) Ask a Cartesian whether he is wont to imagine his globules without colour. Pellucidness is a colour. The colour of ordinary light of the sun is white. Newton in the right in assigning colours to the rays of light.