No, hence "perhaps". The meaning and intent of the sentence is entirely clear so I don't really see what good this sort of pedantry does.

What do we know of the world and the universe about us? Our means of receiving impressions are absurdly few, and our notions of surrounding objects infinitely narrow. We see things only as we are constructed to see them, and can gain no idea of their absolute nature. With five feeble senses we pretend to comprehend the boundlessly complex cosmos, yet other beings with wider, stronger, or different range of senses might not only see very differently the things we see, but might see and study whole worlds of matter, energy, and life which lie close at hand yet can never be detected with the senses we have.

Yeah, I just checked. It's definitely the most complex. Well, other than the thing in Nebula VOQ 34E, but that's a given.

'perhaps'

Probably not, hence perhaps.

Known

Weasel words allowed them to escalate to "Universe".