Full Idea
The costs of giving up classical logic are easily underestimated, …the price being paid in terms of mathematical reasoning.
Gist of Idea
The underestimated costs of giving up classical logic are found in mathematical reasoning
Source
Volker Halbach (Axiomatic Theories of Truth [2011], 16.2)
Book Reference
Halbach,Volker: 'Axiomatic Theories of Truth' [CUP 2011], p.245
A Reaction
No one cares much about such costs, until you say they are 'mathematical'. Presumably this is a message to Graham Priest and his pals.