PHIL. Upon approaching a distant object, do the visible size and figure
change perpetually, or do they appear the same at all distances?

HYL. They are in a continual change.

PHIL. Sight therefore doth not suggest, or any way inform you, that the
visible object you immediately perceive exists at a distance, or will be
perceived when you advance farther onward; there being a continued series
of visible objects succeeding each other during the whole time of your
approach.

HYL. It doth not; but still I know, upon seeing an object, what object
I shall perceive after having passed over a certain distance: no
matter whether it be exactly the same or no: there is still something of
distance suggested in the case.

PHIL. Good Hylas, do but reflect a little on the point, and then tell
me whether there be any more in it than this: from the ideas you actually
perceive by sight, you have by experience learned to collect what other
ideas you will (according to the standing order of nature) be affected
with, after such a certain succession of time and motion.

HYL. Upon the whole, I take it to be nothing else.

PHIL. Now, is it not plain that if we suppose a man born blind was on a
sudden made to see, he could at first have no experience of what may be
SUGGESTED by sight?

HYL. It is.