All expressions are composed of grades of truth considering all assertions, baring those which contradict (yet the contradiction can be composed of true assertions thus even a contradiction has a truth value), are true through a recursion where the same thing is expressed in multiple ways.

For example 2+2=4 is true as 2+2 observes 4 as a variation of 2+2. However 2+2=5 is a contradiction for the very same reason, yet the assertions which 2+2=5 is composed of still express a recursive self referentiality under 1+1=2 and 1+1+1+1+1=5.