"What is our prayer for rain? “We thank You for each drop that You have let fall.”" ~~ Talmud, Berakhot
"Better prayer without synagogue than synagogue without prayer." ~~ Abraham Heschel
"Prayer or benediction without intention is like body without soul." ~~ Tanya
"A drunkard who prays is as though he worships idols." ~~ Talmud, Berakhot
"Prayer is the service of the heart." ~~ Talmud, Ta’anit
"You don’t have to pray loudly; just direct your heart to heaven." ~~ Rabbi Chia
"A man must bless God for the evil, just as he blesses Him for the good." ~~ Berakhot 9:5
"Redeem us speedily for the sake of Your name!" ~~ Eighteen Benedictions
"If a man sees that his prayer was not granted, let him pray again!" ~~ Talmud, Berakhot
"Unless we believe that God renews creation every day, our prayers grow habitual and tedious." ~~ Baal Shem Tov
"One who stands [in prayer] in Eretz Yisrael (the land of Israel) should direct his heart towards Jerusalem, if he was standing in Jerusalem, he should direct his heart towards the holy Temple. " ~~ Talmud, Berakhot 27a
"Prayers truly from the heart open all the doors in Heaven." ~~ Nachman of Bratslav