“I do not think, therefore I am a moustache”
“I think where I am not, therefore I am where I do not think. I am not whenever I am the plaything of my thought; I think of what I am where I do not think to think.”
“I am mad, I think. I am mad therefore I think. I am mad therefore I think I am.”
“I think, therefore I am, therefore I am photographable.”
“I think I am, therefore, I am... I think.”
“I doubt, therefore I think, therefore I am.”