BOOK I PART II
sity, that a coloured or tangible point should
be annihilated upon the approach of another
coloured or tangible point? On the contrary,
does he not evidently perceive, that from the
union of these points there results an object,
which is compounded and divisible, and may
be distinguished into two parts, of which each
preserves its existence distinct and separate,
notwithstanding its contiguity to the other? Let
him aid his fancy by conceiving these points
to be of different colours, the better to prevent
their coalition and confusion. A blue and a red
point may surely lie contiguous without any
penetration or annihilation. For if they cannot,
what possibly can become of them? Whether
shall the red or the blue be annihilated? Or if
these colours unite into one, what new colour
will they produce by their union?