"Jerusalem was destroyed just because school-children were kept from their classrooms." ~~ Talmud, Shabbat
"Who saw not Jerusalem in its glory has never seen a beautiful city." ~~ Talmud, Sukkah
"Whoever mourns for Jerusalem will be meritorious and will see its rejoicing and all who do not mourn for Jerusalem will not see it’s rejoicing. " ~~ Talmud, Ta’anit 30b
"The ransomed of the Lord shall return…with singing to Zion." ~~ Isaiah (Yesha’yahu) 35:10
"Eternity means Jerusalem." ~~ Talmud, Berakhot
"Jerusalem is the very heart of the Jewish State." ~~ David Ben-Gurion
"Jerusalem which is bound firmly together (Psalms [Tehillim] 122:3) binds the Jews one to the other. " ~~ Talmud Yerushalmi, Bava Kamma
"Malchi Tzedek king of Shalem, said “this place makes its inhabitants righteous?”, so he called Jerusalem “Tzedek” (righteousness). " ~~ Midrash, Bereshit Rabba 43
"There are three gates to Gehinam (purgatory) – one of them is in Jerusalem. " ~~ Talmud, Eiruvin 19a
"The Land of Israel is the House of God." ~~ H. Ibn Attar
"The punishment of vain hatred is so harsh that it destroyed Jerusalem and the Temple. " ~~ Beth Hamidrash
"Avraham called it Yireh (See) as it says [in the Scriptures], “And Avraham called the name of that place Yireh Hashem” (See God). Shem called it Shalem (Complete) as it says “And Malki Tzedek, King of Shalem.” The Holy One, Blessed be He said “I will call it Yerushalayim (Jerusalem) like both of them called it – Yireh, Shalem – Yerushalayim. " ~~ Midrash, Bereshit Raba 56