That Golden Rule is a song by Biffy Clyro that was released as a single on the 27th August 2009, in advance of their fifth album 'Only Revolutions.'
The song became the band's second top 10 single, peaking at #10 on the UK singles chart.
According to the That Golden Rule Songfacts, the song's press release described it as "a distinctively heavy and angular rock race of a song, with stunning unexpected time changes,…
Son of Henry, I'm the first in line
To the throne, smell my mustard gas
I slash swords through your wooden spine
Well, it cut my heart and it blew my head