Lyric discussion by Tunes24 

Most say this song is about his son, name being Devo H. Keenan (initial only)

"Maynard" is name James picked up at Westpoint, he was born James "H"erbert Keenan.

He wrote this song while his girlfriend was pregnant with his child, and it is about the storm of emotion bred up inside him over conflicting feelings of perpetuating the abuse he suffered at the hands of his stepfather, and a desire to overcome these worries of "Do unto others, what they have don to you" (perpetuating the cycle of abuse) and raise his child with love. "H" is about Maynard struggling with his soon to collide past and present, and his realization in the face of it, that he can do it.

past and "future", sorry.

@Tunes24 Well said.

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