Curiosity begins as an act of tearing to pieces or analysis.

Psychology is the science of the act of experiencing, and deals with the whole system of such acts as they make up mental life.

You can mark in desire the rising of the tide, as the appetite more and more invades the personality, appealing, as it does, not merely to the sensory side of the self, but to its ideal components as well.

The mental act of sensation which issues in reflex movement is so simple as to defy analysis.

An expectation is a future object, recognised as belonging to me.

An object is not first imagined or thought about and then expected or willed, but in being actively expected it is imagined as future and in being willed it is thought.

Both expectations and memories are more than mere images founded on previous experience.