Read "On Joy and Sorrow" by Baruch Spinoza online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
Having seen that Hatred and Aversion are such that we may freely say, that they can have no place in those who use their understanding as they should, we shall now proceed in the same manner to speak of the other passions. To begin with, Desire and Joy shall come first. Since these arise from the same causes from which love ensues, we shall only say concerning them that we must remember and call to mind what we then said; and with this we leave the subject.
We turn next to Sorrow, of which we may say that it arises only from opinion and imagination which follows therefrom: for it comes from the loss of some good.