Think of the field of consciousness and the field of being as two parallel planes. Naturally there is a tension between them, and the cogito is a spark out of that tension and momentarily bridging it. Note that the cogito is always a momentary thing, at least in the way it is experienced from the side of consciousness. You need to concentrate attention on its terms as formulated in words or ideas and wait for the spark to flash. To find that it concludes with the fleeting certainty of self-existence is only to have drawn out one of its possible meanings, perhaps the most superficial. There is more in there, but you need a different detector to find it. There is a telos in consciousness which is not being but knowledge, to know the nature of the reality in which it arises, in which you arise - you recognise this as shared with every other subject; it is important to every other subject by virtue of consciousness alone. Any discovery of yours must naturally be shared, but the test of such a discovery is that it be only shared skillfully. If you have understood reality then you understand the predicaments of consciousness hence skillfulness is  a natural expression of understanding. The most skillful is probably to say nothing at all, merely to witness the perfection of the thing beyond awe.