A letter from the Lubavitcher Rebbe to one of the Telsher Roshei Yeshiva/Chavrei HaHanholoh where he goes through all the hanhogos and sayings and that Chassidim through the generations said and did. The Rebbe writes about his hesitation, whether or not to answer the letter, since he's not sure what the point of the letter was, i.e. do they REALLY want answers?... Worth your time. From ספר שערי המועדים י'-י"ט כסלו.