Prabhupāda: Yes. (indistinct) Material world means temporary, and some philosophers, like the Māyāvādīs, they say it is false. But we Vaiṣṇavas, we don't say it is false, but it is temporary illusion. It is reflection of the spiritual world, but there is no reality. Sometimes it is compared with the mirage in the desert. There is no water in the desert, but sometimes, by reflection of the sun, it appears that there is water. Similarly, in the material world there is no happiness, but the transcendental bliss and happiness existing in the spiritual world is reflected here, and those who are less intelligent, they are after this illusory happiness, forgetting real happiness in the spiritual life.
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.