I think, therefore I am
Consciousness is the one thing that cannot be doubted
I think, therefore I am in a sentence
“Descartes' foundation: even if all else is illusion, the thinking self must exist.”
Origin of I think, therefore I am
René Descartes, Discourse on the Method (1637)
Related Words
The unexamined life is not worth living
Reflection and self-knowledge are essential to a meaningful life
Knowledge is power
Understanding gives one the ability to act effectively
The limits of my language mean the limits of my world
What we can think is bounded by what we can express
Those who cannot remember the past are condemned to repeat it
Historical ignorance leads to recurring mistakes
I know that I know nothing
The Socratic paradox—awareness of one's own ignorance
Man is the measure of all things
Truth and value are relative to human perception