Truth is Good

P1. Let truth be that which is in accordance with reality.
P2. Let good be that which ought to be done, be something to be desired or approved of; beneficial.
P3. If a thing is good, then participating in or affirming that thing is good.
P4. The negation of good is evil (NOT-good)
P5. Assume truth is evil (ontologically)
P6. "Truth is evil" (propositional)
C1. Since P6 is true ontologically (and so, evil) it ought to NOT be done, be something desired or approved of; NOT beneficial.
C2. Therefore, reject P6
P7. "Truth is good" (propositional)
C3. Since P7 is false ontologically (and so, good) it ought to be done, be something desired or approved of; beneficial.
C4. Therefore, affirm P7
C5. Therefore, even if you believe truth is evil ontologically you must still operate as if it weren't.
C6. Therefore, truth is good.