He might not be the best at socialization, but when it came to quantifying complicated theories Sephiroth was as razor sharp as his sword. Zelda could have put it any number of other -harder to follow- ways and chances were he'd still have managed to logic them out somehow. Being very much a thinker than a talker.

Sephiroth would always reject any notion that the only path to an answer to that question -and others- was when it were deemed that they either needed to know, or were ready to know. It took the control, that precious free will that everyone had, out of their hands. Unacceptable.

"Please remember that these answers are not for you to find, alone, Zelda." He commented, knowing well how Zelda had over-worried herself once before and became sick - over circumstances she couldn't do anything about any more than any of them might be able to.