In Meditations on First Philosophy the philosopher René Descartes describes a series of doubts about the nature of reality, arriving at the famous phrase:
[[I thin]]
I think therefore I am
Just think about it
Thinking, Fast and Slow
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The Thing
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He argues that doubting requires thinking, and therefore, the act of thinking confirms his existence.
Fundamental truths and principles can be known independent of experience
A priori reasoning
Reason and deduction
Empiricists
Experience and sensory perception → acquire knowledge
All knowledge is derived from experience and observation of the external world
A posteriori reasoning
Cogito, ergo sum
In Meditations on First Philosophy the philosopher René Descartes describes a series of doubts about the nature of reality, arriving at the famous phrase:
I think therefore I am
He argues that doubting requires thinking, and therefore, the act of thinking confirms his existence.
