“Physical presence is sometimes appreciable and sometimes not, but vani continues to exist eternally. Therefore we must take advantage of the vani, not the physical presence. Bhagavad-gita, for example, is the vani of Lord Krishna. Although Krishna was personally present five thousand years ago and is no longer physically present from the materialistic point of view, Bhagavad-gita continues.” (Shrila Prabhupada, Chaitanya Charitamrita, Concluding Words)
“To those who are constantly devoted and worship Me with love, I give the understanding by which they can come to Me.” (Lord Krishna, Bhagavad-gita, 10.10)
“Suffering without knowledge, without remedy, is animal life. One who cannot understand that he is suffering and who thinks that he is very well off is in animal consciousness, not human consciousness. The human being should be cognizant of suffering the threefold miseries of this planet. One...
“And of all yogis, he who always abides in Me with great faith, worshiping Me in transcendental loving service, is most intimately united with Me in yoga and is the highest of all.” (Lord Krishna, Bhagavad-gita, 6.47)