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For nothing ought to be posited without a reason given, unless it is self-evident (literally, known through itself) or known by experience or proved by the authority of Sacred Scripture.

William of Ockham

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William of Ockham
Died: 1349
Died: April 9
Friar Franciscan
Logician
Philosopher
Physicist
Theologian
Ockham
Surrey
Guilelmus de‏ ‎Ockham
William of Occam
William of Oakham
Without
Sacred
Nothing
Authority
Self
Unless
Ought
Posited
Known
Proved
Experience
Evident
Given
Literally
Reason
Scripture

More quotes by William of Ockham

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Never increase, beyond what is necessary, the number of entities required to explain anything.
William of Ockham
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Intuitive cognition of a thing is cognition that enables us to know whether the thing exists or does not exist, in such a way that, if the thing exists, then the intellect immediately judges that it exists and evidently knows that it exists, unless the judgment happens to be impeded through the imperfection of this cognition.
William of Ockham
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Plurality is not to be posited without necessity.
William of Ockham
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God's existence cannot be deduced by reason alone.
William of Ockham
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When you have two competing theories that make exactly the same predictions, the simpler one is the better.
William of Ockham
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My God is the green tide in the spring leaves the redness of cherries high in the air the excitement of shooting stars the song of birds in summer branches the sunrise on a winter's morning the name of everything we don't understand.
William of Ockham
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Of two equivalent theories or explanations, all other things being equal, the simpler one is to be preferred.
William of Ockham
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Pluralitas non est ponenda sine necessitate. A plurality (of reasons) should not be posited without necessity.
William of Ockham
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No more things should be presumed to exist than are absolutely necessary.
William of Ockham
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What can be explained by the assumption of fewer things is vainly explained by the assumption of more things.
William of Ockham
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3 is a prime, 5 is a prime, and 7 is a prime. Why bother with non-prime numbers when the primes can do everything?
William of Ockham
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Entities should not be posited unnecessarily.
William of Ockham
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First it must be known that only a spoken word or a conventional sign is an equivocal or univocal term therefore a mental contentor concept is, strictly speaking, neither equivocal nor univocal.
William of Ockham
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Entities are not to be multiplied beyond necessity.
William of Ockham
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Entia non sunt multiplicanda praeter necessitatem
William of Ockham
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Whenever two hypotheses cover the facts, use the simpler of the two.
William of Ockham
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With all things being equal, the simplest explanation tends to be the right one.
William of Ockham
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Simpler explanations are, other things being equal, generally better than more complex ones.
William of Ockham
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It is vain to do with more what can be done with less.
William of Ockham
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The explanation requiring the fewest assumptions is most likely to be correct.
William of Ockham