The Old Charges of the masons’ lodges were documents describing the duties of the members, part of which (the charges) every mason had to swear on admission. The poem begins by describing how Euclid “counterfeited geometry” and called it masonry, for the employment of the children of the nobility in Ancient Egypt. The manuscript was dated to 1390.
Two extracts are of particular interest: Yn that onest craft to be parfytte; And so uchon schulle techyn othur, And love together as sister and brother In that honest craft to be perfect; And so each one shall teach the other, And love together as sister and brother. Articulus decimus. The thenthe artycul ys for to knowe, Amongst the craft, to hye and lowe, There schal no mayster supplante other, But be togeder as systur and brother, Yn that curyus craft, alle and som, That longuth to a maystur mason. Tenth article. The tenth article is for to know, Among the craft, to high and low, There shall no master supplant another, But be together as sister and brother, In this curious craft, all and some, that belongeth to a master mason.
However, it should be noted that not everyone agrees with these interpretations of the Regius Manuscript.
I suggest, reading the translation from The Very Wor. Bro. the Reverend Neville Barker Cryer Past Grand Chaplin, a Past Assistant Provincial Grand Master of Surrey, Past Master and Past Secretary of Quatuor Coronati Lodge No 2076 E.C.