It seems that the phrase '万機公論に決すべし(all matters decided by open discussion)' was adopted from '万機宜しく公議に決すへし (all matters decided by open discussion)' of Senchu hassaku (the basic outline of the new regime) (in 1867) drawn up by Ryoma SAKAMOTO who was a friend of Yuri.
「万機公論に決すべし」の語句は、由利と親交のあった坂本竜馬の船中八策（慶応三年六月）に「万機宜しく公議に決すへし」とあり、ここから採られたものとみられる。