But if I touch ice to-day and again find it cold, the association is repeated, and the memory of it becomes stronger.

And, by this very simple process of repetition of experience, it has become utterly impossible for us to think of having handled ice without thinking of its coldness.

But, that which is, under the one aspect, the strengthening of a memory, is, under the other, the intensification of an expectation.

Not only can we not think of having touched ice, without feeling cold, but we cannot think of touching ice, in the future, without expecting to feel cold.

An expectation so strong that it cannot be changed, or abolished, may thus be generated out of repeated experiences.