"Who answers Amen is greater than the suppliant." ~~ Talmud, Berakhot
"What is our prayer for rain? “We thank You for each drop that You have let fall.”" ~~ Talmud, Berakhot
"Prayer or benediction without intention is like body without soul." ~~ Tanya
"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
"By benevolence man rises to a height where he meets God. Therefore do a good deed before you begin your prayers." ~~ Ahai Gaon, Sheiltot
"Who cries over the past is offering a vain prayer." ~~ Berakhot 9:3
"Prayer without intention is like a body without a soul." ~~ Yeshu’ot Meshicho
"O Music! miraculous art! A blast of thy trumpet, and millions rush forward to die; a peal of thy organ, and uncounted nations sink down to pray." ~~ Benjamin Disraeli
"Man can never be happy if he does not nourish his soul as he does his body." ~~ Rebbe Manachen Schneerson
"None should stand up to pray save in sober mood; the pious men of old used to wait an hour before they said their prayer, that they might direct their heart toward God." ~~ Berakhot 5:1
"One should not pray in levity and jest, but in gravity and the joy of doing good." ~~ Talmud, Berakhot