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

Such being the nature of mental life, the business of psychology is primarily to describe in detail the various forms which attention or conation assumes upon the different levels of that life.

The perceptive act is a reaction of the mind upon the object of which it is the perception.

It is convenient to distinguish the two kinds of experience which have thus been described, the experienc-ing and the experienc-ed, by technical words.

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

We cannot therefore say that mental acts contain a cognitive as well as a conative element.

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.