II
The desires which follow from our nature in such a manner that they can be understood through it alone, are those which are related to the mind, in so far as it is conceived to consist of adequate ideas. The remaining desires are not related to the mind, unless in so far as it conceives things inadequately, whose power and increase cannot be determined by human power, but by the power of objects which are without us. The first kind of desires, therefore, are properly called actions, but the latter passions; for the first always indicate our power, and the latter, on the contrary, indicate our impotence and imperfect knowledge.