Crossword puzzle clue "beginning of a noted political admonition"

Beginning of a noted political admonition

"Every new beginning comes from some other beginning's ___ ..." (Semisonic)

"In the beginning" is its beginning

"I'm the beginning of eternity, the end of time and space, the beginning of the end, and the end of every place ..."

Political beginning?

Noted book publisher beginning 1915

Noted political writer

Noted political duo