Śyāmasundara: He says that although some schools of philosophy, especially in Britain, said that the mind is a blank slate at the time of birth, Leibnitz defended the fact that there are necessary truths which are implanted in the mind before birth. These are innate truths, like mathematical truths. There are certain necessary truths that a person is born with, that he can understand, being implanted in his mind, just like mathematical proofs, "Two plus two is equal to four"—that is a necessary truth with which a person is born.
Prabhupāda: Yes. That truth is devotion. Everyone wants to be devoted to somebody else. And because such devotion is misplaced, he becomes unhappy. When that devotional spirit will be rendered to the Supreme Person, then he will be happy. But the devotional spirit is there.
Śyāmasundara: Everyone is born with this?
Prabhupāda: Yes. Just like this child, he was asked to obey, immediately he offered obeisances. So this is devotion. Every politician, everyone has got some followers. That means the devotional spirit is there. Even a rogue, dacoit, plunderer, he has got also some follower, and one could not follow others without devotional spirit. Is it not? Therefore this devotional spirit is innate in everything. That is truth.
Śyāmasundara: Is this the only necessary truth that one is born with, or are there others?
Prabhupāda: This is the prime truth. The method of devotional service and other ideas, they are included, but the basic principle is devotional service.