Relating to Secular People

I learned that if a rabbi takes a position that opposes that of all the other rabbis in his generation, he is not to be listened to. Would this not apply to Rav Kook who was a lone voice in his generation?

Arguing is part of every marriage and relationship, and there must be a constructive way to do so. Similarly, so many Jews are far from Torah, that there must be some guidelines how to "Mekarev" them in the most beneficial way to return to Judaism. Rav Kook, as always, has some innovative tips.