How can it be that mathematics, being after all a product of human thought which is independent of experience, is so admirably appropriate to the objects of reality?

This special character that the atom possesses is the appearance of whole numbers.

It would appear that, on a sufficiently small scale, points cannot be identified either by their metric relationship to neighboring points or by local physical characteristics.

[I]n picturing an object at an absolutely definite position in space we cannot seem to help picturing it as fixed. In other words, we cannot think of the position of an object and of its velocity simultaneously.