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Philosophy Quote by Thomas Jefferson

“I [am] obliged to recur ultimately to my habitual anodyne, "I feel: therefore I exist." I feel bodies which are not myself: there are other existencies then. I call them "matter". I feel them changing place. This gives me "motion". Where there is an absence of matter, I call it "void", or…” quote by Thomas Jefferson
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““I [am] obliged to recur ultimately to my habitual anodyne, "I feel: therefore I exist." I feel bodies which are not myself: there are other existencies then. I call them "matter". I feel them changing place. This gives me "motion". Where there is an absence of matter, I call it "void", or "nothing", or "immaterial space". On the basis of sensation, of matter and motion, we may erect the fabric of all the certainties we can have or need.””

Thomas Jefferson

About This Quote

The speaker argues that personal sensation of matter, motion, and void forms the foundation of all knowledge and certainty.

In simple terms: Knowledge stems from sensory experience of matter and motion.

Key Takeaway

Sensory experience underpins certainty.

Themes

Epistemology Phenomenology Metaphysics Existentialism

Mood

Reflective Analytical

Type

Philosophical Axiom

When to use this quote

  • Philosophical debate on foundations of knowledge
  • Teaching introductory epistemology
  • Designing AI perception models

Key Concepts

Sensation Matter Motion Void

Practical Applications

  • Developing curricula on sensory-based epistemology
  • Creating frameworks for grounding AI reasoning in perceptual data

Questions to Reflect On

  • How does sensory experience limit or enable knowledge?
  • Can certainty be achieved without external matter?
A Different Perspective

Critics argue that relying solely on sensation neglects rational inference and abstract reasoning.

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