And their referent is not so much individual things as individual conceptions. And then we are confronted with a divorce between scientific propositions and reality. There is no guarantee that scientific propositions are applicable to reality. If this is the case, as it may be, reasoning will depend on names, names on the imagination, and the imagination perhaps, as I think, on the motion of the bodily organs. On the other hand, this statement can be countered with others in which a relation between our terms and reality is suggested.
Philosophy is concerned with the discovery of causes.
The former is the aggregate of accidents in the agent or agents which are required for the production of an effect which is actually produced, while the latter is the aggregate of requisite accidents in the patient. Both together make up the entire cause. The accidents in each can also be called the active power of the agent and the passive power of the patient. Hobbes reduces the formal and final causes to efficient causes. For Hobbes final causality is simply the way in which efficient causes operate in man, with deliberation.