The sensory acts are accordingly distinguished by their objects.

... when demand is being destroyed by expensive oil just as expensive oil is incentivising increased production - it should come as no surprise that at some point the markets would react.

Thus the same object may supply a practical perception to one person and a speculative one to another, or the same person may perceive it partly practically and partly speculatively.

The sensory acts are accordingly distinguished by their objects.

When we come to images or memories or thoughts, speculation, while always closely related to practice, is more explicit, and it is in fact not immediately obvious that such processes can be described in any sense as practical.

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

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