Intelligence is hard to identify. The best way is asking your own intelligence to introduce itself to you.
"The only essential thing I want to say about intelligence is that intelligence is based on integrality; beyond any separability, fragmentality or even any label by code or order. Intelligence implies the processes of 'the actualization of potential' according to the Greek philosopher Aristotle. Any potential ! Since this is unspecified and unique for all of us. Only the identification of the limits within your own intelligence will make it clear that intelligence is unlimited within its potential itself; it will continue identifying and learning for ever and ever".
Within intelligence there's also the aspect of teleology; one's spiristic destiny here on earth. One's meaning actualized through Plato's tetrahydronic 'Purpose of Life' and Pythagoras with his 'Tetraktys '.