I found a slightly more comprehensible translation of that Vedic quote:

    Who knows from whence this great creation sprang?
    He from whom all this great creation came.
    Whether his will created or was mute,
    The Most High seer that is in highest heaven,
    He knows it - or perchance even He knows not.[1]

[1] http://www.creationmyths.org/rigveda-10-129-indian-creation/