Moshiach:-The Talmud says that Moshiach will arrive in a generation who are totally innocent Of sin or a generation who are guilty of sin (Sanhedrin 98)
Hagaon Harav Chaim Brim,zt’l in his Sefer ‘Marbe Chaim’ quotes the Chazon ish,zt’l as introducing a novel interpretation of this painful Gemora mentioned above. After all, can we Really expect a total innocent generation? That thought is emotionally debilitating even to The righteous.
The Chazon Ish offers his sensibly composed view that the innocent refers also to the sinners of today as they are all “innocent” sinners which is termed in Talmudic language as תינוק שנשבה.
Marriage- The Chofetz Chaim maintained that choson and Kalah visiting each other excessively, Is one of the main causes for the absence of “shalom bayis” in homes. This is quoted by the Son in law of the Chofetz Chaim , Maran Harav M Zaks, zt’l. See Sefer טיפה מן הים.
Chumra- of R’ Chaim Brisker,zt’l- in a recent Sefer printed, mostly memoirs of Maran Harav Aharon Leib Steinman, shlita it is quoted that if a chair was removed from its original place, Rav Chaim zt’l Would not return the chair to its place because of the חשש of עשיית אהל on Shabbos .
Causing others to be happy- in the recently published Sefer כתרה של תורה page 86 Maran Harav Shmuel Berenbaum,zt’l is quoted as saying ” The greatest good deed a Jew can do, is to make Another Jew happy and to help another Jew “
Non Jews-in the above mentioned Sefer ,it is quoted that Rosh Yeshivas Mir , Maran Harav Berenbaum, zt’l would get quite annoyed when hearing Yeshiva Bochurim using nasty adjectives when discussing non jews. He would ask rhetorically how can one speak so nasty about a person who is a צלם אלוקים? ( an image of G’D)