Quaecumque sunt vera . . . .

I've formed the impression that to some Catholics, traditionalism is the Church's most urgent and dangerous threat today, perhaps the only threat to the Church.  Reading their persistent polemics, I can only refer such polemicists to the counsel of St. Paul the Apostle:

De
cetero, fratres,

Quaecumque sunt vera,

Quaecumque pudica,

Quaecumque iusta,

Quaecumque sancta,

Quaecumque amabilia,