 After returning to the rock @-@ music setting , Harrison sings of his frustrations in the material world , which rather than satisfying human desires , merely leaves the senses " swelling like a tide " . Tillery writes of Harrison not being immune to " the siren call of the world " despite his spiritual goals , and Harrison would refer to the years 1973 – 74 as " the naughty period " , a reaction to the failure of his marriage to Pattie Boyd . 
