Cogito, ergo sum.
Je pense, donc je suis.
I think, therefore I exist.
"Cogito ergo sum" is used widely as an axiom, beyond simply just being a step in logic.
It has become a solid, unquestionable statement we imagine our existence on - strongly interrelating rational thought and subjective existence, strongly influencing modern thought and approach to everything.
In its weakest form, "Cogito ergo sum" is a plea and an attempt at external reinforcement of self-assurement.
We have used it many times as a form of self-indulgence: we point at empty space, rocks, plants, animals and say "Haha, I'm a higher life-form than you are! I'm more valuable than you are! You don't even exist!"
The concept of 'intelligence' reflects the flaws of "Cogito ergo sum". Is it alive? Is it aware? Does it exist? How can I compare? What does it all mean?
The separation of Intelligence into intelligences causes a variety of problems, most notably the notion of stand-alone intelligence existing among the void of dead worlds.
"I think. I exist." would be a more accurate statement.
Steps of logic are not always valid - nor useful.