Ψ Pathos: A Philosophy of Emotion

Seventeenth-Century Netherlands · 1632–1677

Baruch Spinoza on Emotion

Don’t laugh at it, don’t lament it, or blame it. When you clearly understand the cause of your emotions, you are finally liberated from being a slave to your hurt to becoming the master of your life.

Sadness is a passive state felt when human activity capacity (conatus) is reduced or suppressed. A passion (pain) ceases to be a passion the moment we form a clear idea of ​​it. — 『Etica』 Part 3 Summary 11 & Part 5 Summary 3

The central ideas

  • All beings have a fundamental life force, or 'Conatus', that seeks to protect and expand their lives.
  • Joy arises when my capacity for action increases, and sadness comes when my capacity for action shrinks.
  • The state of being angry and jealous at the mercy of external stimuli is ‘passio (subordination)’, and the state of thinking and acting with the power of one’s nature is ‘active (freedom)’.
  • Emotions cannot be corrected by moral preaching or self-blame. When you calmly understand the cause-and-effect relationship as to why you feel that way, the pain will subside on its own.

Five complete deep essays

Grinding Lenses, Sharpening Freedom

Spinoza is one of the figures who lived the most noble and impoverished life in the history of philosophy. Raised in a Jewish community, he received the harshest excommunication (cherem) at the age of 24 for questioning the dogmatism of the church. He was completely abandoned by his family, friends, and compatriots, and even suffered the threat of assassination by being stabbed by a fanatic.

However, he refused a university professorship or wealthy sponsorship throughout his life, and made a living by cutting glasses and microscope lenses in the attic of a boarding house. Until his death at the age of 44 from lung disease while inhaling glass dust, he never once wrote a letter of hatred or anger towards the world that excommunicated him.

He left behind the immortal work 『Ethica』, which identifies the human mind and emotions with transparent mathematical laws, as if observing the refraction of light through a cold lens.

Conatus: The Striving of a Living Being

The core engine of Spinoza's philosophy is the Latin word 'Conatus'. Conatus is ‘the fundamental life force through which all existing things constantly strive to preserve and expand their own existence.’

Just as a stone continues to fly in the direction in which it was thrown, and weeds grow through the asphalt toward the sunlight, humans also try to preserve their capacity for life and demonstrate greater power.

� Spinoza's definition of joy and sadness is extremely scientific.

• Joy (Laetitia): It is the feeling I feel when my capacity for activity (conatus) ‘leaps forward’ from a smaller state to a greater state.

• Tristitia: It is the pain felt when one's capacity for action is suppressed or hindered and one is 'shrinked to a smaller state.'

In the end, the real reason we are sad is because the life energy within us is suffocated by the other person's harsh words or failures.

Human Bondage: Captured by Another's Expression

The title of Part 4 of 『Ethica』 is ‘On the Slavery of Man, or the Power of Passion’. Slavery literally means slavery.

Why can't we be free? This is because the cause of the emotions I feel is not within me, but is tied to ‘someone outside’. When my boss praises me, I feel happy and feel like I'm flying to heaven, but when my boss frowns, I wander through hell all day. This is ‘Passio’. I am being dragged around with the cockpit of my emotions in someone else's hands.

In particular, 'jealousy (Invidia)' and 'hatred (Odium)' are the most destructive passive passions that eat away at conatus. The feeling of stomachache when I see others doing well comes from the illusion that my own ability to exist has become shabby. The more I hate the other person, the more my conatus is bound and suffocated by the other person's shadow.

From Sadness Toward Active Joy

So how can we escape emotional slavery? Spinoza's proposal shines brightly in Part 5, Theorem 3 of 『Ethica』.

'An emotion that is a passion ceases to be a passion the moment we form a clear idea about it.'

The reason I go on a rampage when someone hurts me is because I don't see the entire cause-and-effect relationship of the incident and see it through a distorted lens of 'that horrible guy intentionally harassed me.' But take a step back and clear the lens of your thoughts.

'That person also spit out such aggressive words because of his sense of entitlement. 'His family environment and the stress he received today caused him to act like that.'

The moment you clearly understand that everything in nature is intertwined in an inevitable chain of cause and effect, the burning flames of hatred are replaced by calm compassion and intelligent peace. Those who understand will not be hurt.

Spinoza for Today: Freedom Through Necessity

Spinoza left an eternal aphorism to mankind in the preface to 『Politics』.

'I did not ridicule (non ridere), deplore (non lugere), or detest (neque detestari) human behavior, but tried only to understand (sed intelligere).'

Today, when you feel heartbroken because of someone's rudeness or your own shabby appearance, remember Spinoza's words. Don't lament and blame yourself. Don't waste your energy cursing your opponent and seeking revenge.

Just observe the cause of your emotions clearly and transparently. Understand why your conatus has shrunk, and give yourself real joy (reading, taking a walk, creating something warm, exercising) that will increase your ability to exist. When you love your own capabilities, nothing in the world can shake your peace.

Philosophical suggestions for everyday life

When your emotions hit you, don't blame yourself morally, but objectively break down the cause as if you were solving a geometry problem.

  • Spinoza's three no principles: When angry, repeat, 'Do not laugh, do not lament, do not hate, and only understand cause-and-effect relationships.'
  • Conatus Checklist: Honestly evaluate whether my current actions (browsing social media, criticizing others) are increasing (joy) or eroding (sadness) my ability to exist.
  • Sublimation of emotions through understanding: From the perspective of the person who made me angry, write down three objective reasons why he had no choice but to engage in such deficient behavior.
  • Active Joy Recharge: Practice one purely immersive activity today (art, intellectual exploration, observation of nature) that will immediately expand your conatus.

Source guide

Primary guide: Ethics III, definitions of the affects; Ethics IV–V on bondage and freedom.

Pathos Editorial · Reviewed 2026-09-12

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