I completely agree that science is our best shot for reaching beyond the limitations of our brains. Absolutely. By I'll contend we have another tool of 'transcendence', so to speak. Because our conscience is just a small fraction of our minds, it might be argued that there is a transcendence to be found within: beyond conscient thought and languages, we could tap into dormant feelings and faculties. It could be achievable with arts, meditation, drugs... Science can reach outside of us onto the cosmos. This other thing could reach within us into our minds. As for reaching anything outside everything... well, that's just a foolish concept.