"O my Lord, those influenced by demoniac principles cannot realize You, although You are clearly the Supreme by dint of Your exalted activities, forms, character and uncommon power, which are confirmed by all the revealed scriptures in the quality of goodness and the celebrated transcendentalists in the divine nature."
This is a verse from the Stotra-ratna (12) of Yāmunācārya, the spiritual master of Rāmānujācārya. The authentic scriptures describe the transcendental activities, features, form and qualities of Kṛṣṇa, and Kṛṣṇa explains Himself in the Bhagavad-gītā, the most authentic scripture in the world. He is further explained in Śrīmad-Bhāgavatam, which is considered the explanation of the Vedānta-sūtra. Lord Kṛṣṇa is accepted as the Supreme Personality of Godhead by these authentic scriptures, not simply by vox populi. In the modern age a certain class of fools think that they can vote anyone into the position of God, as they can vote a man into the position of a political executive head. But the transcendental Supreme Personality of Godhead is perfectly described in the authentic scriptures. In the Bhagavad-gītā the Lord says that only fools deride Him, thinking that anyone can speak like Kṛṣṇa.
(Sri Caitanya Caritamrta-----1:3:87-----translation and purport).

"O my Lord, everything within material nature is limited by time, space and thought. Your characteristics, however, being unequaled and unsurpassed, are always transcendental to such limitations. You sometimes cover such characteristics by Your own energy, but nevertheless Your unalloyed devotees are always able to see You under all circumstances."
This verse is also quoted from the Stotra-ratna (13) of Yāmunācārya. Everything covered by the influence of māyā is within the limited boundaries of space, time and thought. Even the greatest manifestation we can conceive, the sky, also has limitations. From the authentic scriptures, however, it is evident that beyond the sky is a covering of seven layers, each ten times thicker than the one preceding it. The covering layers are vast, but with or without coverings, space is limited. Our power to think about space and time is also limited. Time is eternal; we may imagine billions and trillions of years, but that will still be an inadequate estimate of the extent of time. Our imperfect senses, therefore, cannot think of the greatness of the Supreme Personality of Godhead, nor can we bring Him within the limitations of time or our thinking power.
(Sri Caitanya Caritamrta-----1:3:89-----translation and purport).

“"Let us submit one piece of information before You, dear Lord. It is not at all false but is full of meaning. It is this: If You are not merciful upon us, then it will be very, very difficult to find more suitable candidates for Your mercy."
This verse is from the Stotra-ratna (47), by Śrī Yāmunācārya.
(Sri Caitanya Caritamrta-----2:1:203-----translation and purport).

"'By serving You constantly, one is freed from all material desires and is completely pacified. When shall I engage as Your permanent eternal servant and always feel joyful to have such a fitting master?'"
In His teachings to Sanātana Gosvāmī, Śrī Caitanya Mahāprabhu has declared every living entity to be an eternal servitor of the Supreme Personality of Godhead. This is the constitutional position of all living entities. Just as a dog or servant is very much satisfied to get a competent, perfect master, or as a child is completely satisfied to possess a competent father, so the living entity is satisfied by completely engaging in the service of the Supreme Lord. He thereby knows that he has a competent master to save him from all kinds of danger. Unless the living entity comes to the guaranteed protection of the Supreme Lord, he is full of anxiety. This life of anxiety is called material existence. To be completely satisfied and devoid of anxiety, one must come to the position of eternally rendering service to the Supreme Lord. This verse is also from the Stotra-ratna (43), by Śrī Yāmunācārya.
(Sri Caitanya Caritamrta-----2:1:206-----translation and purport).

"'By serving You constantly, one is freed from all material desires and is completely pacified. When shall I engage as Your permanent eternal servant and always feel joyful to have such a perfect master?'"
This is a statement made by the great saintly devotee Yāmunācārya in his Stotra-ratna (43).
(Sri Caitanya Caritamrta-----2:8:73-----translation and purport).

"'O my Lord! O unlimited one! Although I was merged in the ocean of nescience, I have now, after a long time, attained You, just as one may attain the seashore. My dear Lord, by getting me, You have obtained the right person upon whom to bestow Your causeless mercy.'"
This is verse 21 from the Stotra-ratna, composed by Ālabandāru Yāmunācārya. One's relationship with the Supreme Personality of Godhead may be reestablished even after one has fallen into the ocean of nescience, which is the ocean of material existence involving the repetition of birth, death, old age and disease, all arising out of the acceptance of the material body. There are 8,400,000 species of material life, but in the human body one attains a chance to get release from the repetition of birth and death. When one becomes the Lord's devotee, he is rescued from this dangerous ocean of birth and death. The Lord is always prepared to shower His mercy upon fallen souls struggling against miserable material conditions.
(Sri Caitanya Caritamrta-----2:11:151-----translation and purport).

"O my Lord, everything within material nature is limited by time, space and thought. Your characteristics, however, being unequaled and unsurpassed, are always transcendental to such limitations. You sometimes cover such characteristics by Your own energy, but nevertheless Your unalloyed devotees are always able to see You under all circumstances."
This is a verse from the Stotra-ratna (13) of Yāmunācārya.
(Sri Caitanya Caritamrta-----3:3:92-----translation and purport).