Most fitting introduction to Trump’s cogito? (5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Cogito , Latin for ‘I think’, is best known as part of the Cartesian philosophy Cogito ergo sum , ‘I think therefore I am’, the principle establishing the existence of a being from the fact of its thinking or awareness. Whether the current POTUS is capable of any serious thinking or awareness is open to question, but if he had a first guiding principle, it might be I DEAL. Witness the ‘deals’ he has done in various parts of the world, or the deal he is soon going to offer Greenland …