No knowledge is a pure as the holy name of the Lord. 
No vow is as powerful as the holy name.
No meditation in the world is like the holy name.
No philosophy brings a result like the holy name.
No renunciation is greater than the holy name.
Nothing will ever be equal to the holy name.|
Srila Haridasa Thakura
|Sri Hari-nama-cintamani 8.4- 6

Let me not desire anything but the highest good for my worst en emies.
Srila Bhaktisiddhanta Sarasvati Thakura
If one becomes a bookworm, reading many books and scriptures and hearing many commentaries and the instructions of many men, this will produce doubt within his heart. One cannot in this way ascertain the goal of life.
Srila Krsnadasa Kaviraja Goswami 
Sri Caitanya-caritamrta, Adi-lila 16.11
Even if a great genius could somehow or other, after a time-consuming effort, count all the particles of dust on the surface of the earth , such a genius could never count the attractive qualities of the Personality of Godhead, who is the reservoir of all potencies.Sri Drumila, Srimad-Bhagavatam 11.4.2