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.

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

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

The thing of which the act of perception is the perception is experienced as something not mental.

For psychological purposes the most important differences in conation are those in virtue of which the object is revealed as sensed or perceived or imaged or remembered or thought.

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

It may be added, to prevent misunderstanding, that when I speak of contemplated objects in this last phrase as objects of contemplation, the act of contemplation itself is of course an enjoyment.