No Resolution of Repenting hereafter, can be sincere.

To err is human, to repent divine, to persist devilish

The Sun never repents of the good he does, nor does he ever demand a recompense

Two man talk and one may hear, but three cannot take part in a conversation of the most sincere and searching sort.

How few there are who have courage enough to own their faults, or resolution enough to mend them.

I never find sincerity offensive... so, be sincere.