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About this quote

What does it mean?
Newton admits he can predict celestial motions but cannot predict human irrationality.
In plain terms
I can calculate planets, not people's madness.
What can you take from it?
Human behavior is less predictable than physical systems.

Where it applies

  • scientific modeling
  • social analysis

Putting it to work

  • use physics for bodies
  • recognize limits in social science

Questions to consider

  • What makes human behavior harder to model?
  • Can future science bridge this gap?

Another view

Complexity of minds may eventually be modeled with better theories.

More from Isaac Newton

  1. God created everything by number, weight and measure.

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  2. The ancients considered mechanics in a twofold respect; as rational, which proceeds accurately by demonstration, and practical. To practical mechanics all the …

    Permalink to quote #16
  3. Our design, not respecting arts, but philosophy, and our subject, not manual, but natural powers, we consider chiefly those things which relate to gravity, lev…

    Permalink to quote #17

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