Sadness
Sadness (tristitia) is the feeling of decreasing power — the transition from greater to lesser perfection.
In depth
Sadness is the opposite of joy: it is what you feel when your power of acting diminishes. External forces overpower your striving, illness reduces your body's capacity, or confusion clouds your understanding. Spinoza does not moralize sadness — it is a natural response to real diminishment. But he insists that sadness is always bad in itself, because it always represents a loss of power.
Why it matters
Understanding sadness as loss of power changes how you respond to it. Instead of guilt or self-blame, you look for what is diminishing your capacity and address it. Sadness is diagnostic, not punitive.
Source references
- Ethics III.P11