Hayagrīva: Aquinas believed that truths, religious truths, are attained through both reason and revelation. He ascribed to Anselm's statement, "I believe in all that I may understand," and also to Abelard's, "I understand in order that I may believe," so that reason and revelation complement one another as a means to truth.
Prabhupāda: Yes. Truth, through reason, that is... Of course human reason is not perfect; therefore revelation also wanted. So that truth arrived at by logic, philosophy and revelation, that is real truth. Our process is to arrive the truth through guru, spiritual master, and he is accepted as representative of the Absolute Truth, Personality of Godhead, and he carries the message of truth because he has seen the Absolute Truth through disciplic succession. So if we accept the bona fide spiritual master (as) representative of God and please him by submissive service, then by his mercy and pleasure we can understand God, the spiritual world, by revelation. We offer, therefore, our great respect to the spiritual master and say, yasya prasādād bhagavat-prasādo **. If you can please the spiritual master, who is carrying the message of the Lord without any speculation, then God becomes revealed. Another place it is said, sevonmukhe hi jihvādau svayam eva sphuraty adaḥ (Brs. 1.2.234). When we engage our senses in the spirit of service to the Supreme Lord, then Lord becomes revealed. In another place it is said, teṣāṁ nityābhiyuktānāṁ bhajatāṁ prīti-pūrvakam, buddhi-yogaṁ dadāmi tam. The Lord is there, but one who is engaged in loving service to the Lord, he gets direct connection with the Lord, and the instruction also, so that the devotee may be able to enter the spiritual world.
Hayagrīva: Aquinas believed that God is the only single essence that consists of pure form. He felt that matter is only a potential and, in order to be real, must assume a certain shape or form. "Being in the universe have to acquire an individual form in order to actualize themselves. When matter unites with form, the form gives an object its individuality and personality." A form gives an object its individuality and personality.
Prabhupāda: Yes. The mat..., matter has no form. The spirit soul has got form. Though the matter is covering the actual form of the spirit soul, the matter appears to have form. Just like the original cloth has no form, but when the tailor cuts the cloth according to the body of the person, then the shirt and coat takes a form. The matter itself has no form. When you take clay, it has no form, but if you make it like a doll, like a man or woman, then it has a form. When the change the clay, and you manufacture a fort, then the fort has form. So form and formlessness is of the matter, but in the spiritual world everything has got form. The spirit soul has got form. God has got form. This is the truth.