LEV598 … one should not judge the piety of a deed by the initial impression it makes. Rather, one must appraise, as far as his intelligence will permit, the overall implications until he is able to objectively assess what will serve him better – doing [the deed] or not doing [it]. [For example,] the Torah has commanded us [this verse]: "Continually reprove your fellow man." So on numerous occasions one undertakes to rebuke sinners at a place or time where his words will not be accepted, thereby causing them to press onward with their wickedness and to desecrate the name [of the Eternal], adding rebellion to the sins [already committed]. Acting in such a manner is not piety, and one should rather be silent, as our Sages of blessed memory have said (Yevamos 65b): "Just as it is a mitzvah to say what will be heard, it is also a mitzvah not to say what will not be heard." [Likewise,] it is obvious that a person ought to run to fulfill a mitzvah and try to be among those who occupy themselves with its performance. But there are times when this may lead to disputes, and then a mitzvah will be debased and the name of Heaven will be desecrated more than it will be honored. Under such circumstances, it is surely incumbent upon the pious person to forgo the performance of the mitzvah rather than to pursue it.