Lesson · 4 min Stretch
Other Minds
In one line You never feel another person’s experience, so take care with what you infer and ask.
You can feel your own pain, but you only see another person’s behavior. The problem of other minds asks how you know anyone else has experiences at all. The usual answer is an argument from likeness: others have bodies like mine, act like me, and speak of feelings, so they probably feel as I do.
The argument is reasonable, but it leaves room for error about what others feel. Two people can react alike and feel differently, or feel alike and show it differently. A quiet face may hide worry, and a loud laugh may hide fear.
The practical lesson is humility with curiosity. Treat your reading of someone as a guess and check it by asking and listening. People can tell you more about their inner life than behavior can.
The quiet classmate
Ned thinks his classmate Ada is bored in lessons because she never speaks and looks away. He has started to ignore her.
A teacher suggests asking. Ada says she is shy and listens hard, and that she writes her ideas afterward because speaking in groups frightens her. Ned invites her to send notes before lessons.
Try this today Next time you assume what someone feels, ask them one open question instead.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “Other Minds.” https://quest2reason.com/learn/lesson/other-minds. Accessed 13 November 2026.
Sources
- John Stuart Mill, An Examination of Sir William Hamilton’s Philosophy (1865), chapter 12 — The argument from analogy: others have bodies and behavior like mine, so they probably have feelings like mine. Paraphrased; nothing is quoted.
- Stanford Encyclopedia of Philosophy, “Other Minds” — The problem of other minds.