It is correct to say 'I think' but not 'I think that I think... - Ludwig Wittgenstein

"It is correct to say 'I think' but not 'I think that I think,' and certainly not 'I think that I exist.'"

Ludwig Wittgenstein Philosophy

Philosopher Austrian-British 1889–1951

More from Ludwig Wittgenstein

"Whereof one cannot speak, thereof one must be silent."

"The limits of my language mean the limits of my world."

"A picture held us captive. And we could not get outside it, for it lay in our language and language seemed to repeat it to us inexorably."

"The world is everything that is the case."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."