Full Idea
If truth can be explicitly defined, it can be eliminated, whereas an axiomatized notion of truth may bring all kinds of commitments.
Gist of Idea
If truth is defined it can be eliminated, whereas axiomatic truth has various commitments
Source
Volker Halbach (Axiomatic Theories of Truth (2005 ver) [2005], 1.3)
Book Reference
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.4
A Reaction
The general principle that anything which can be defined can be eliminated (in an abstract theory, presumably, not in nature!) raises interesting questions about how many true theories there are which are all equivalent to one another.