So there are three phases of time: past, present and future. Time is eternal; I am also eternal. But because I am in the material world, the time is relatively divided into past, present and future. Relativity, the law of relativityI have explained several times. Brahma's past, present, future and the ant's past, present, future are not the same. Similarly, our past, present, future or the ant's past, present, future are not the same. Time is eternal, but according to the quality of the body, the past, present, future is calculated. So it is said in the Bhagavad-gita... Krsna says vedaham samatitani [Bg. 7.26]. Because Krsna is not changing body, therefore He has no past, present, future. Those who are changing body, they have got past, present, future. I had my childhood. I have changed the body in this old age. Therefore I think, "In the past I was like this, or future, I will be like this." So this is relative. Time is eternal, we are eternal, but because we have accepted this temporary body, therefore we have to calculate past, present and future. So future means... Just like there is ordinary word in English, "Child is the father of man," future. The same child will be father or grandfather in future.

So we have to follow the principle of religion; otherwise we are misguided. Just like a child has to be sent to school to understand, to become learned scholar. It is compulsory, not that I may send my child to school or if I like, I don't send. No. It is compulsory. Tad-vijnanartham sa gurum evabhigacchet [MU 1.2.12]. This is Vedic injunction. If you want to be learned fully, especially if you want to learn the transcendental science, gurum eva abhigacchet: "One must go to a guru." Guruthe spiritual master as well as the teacher also, guru. So he must att..., he must go to a guru. Tad viddhi pranipatena pariprasnena sevaya [Bg. 4.34]. And going to guru, what you have to do? Pranipatena. You have to fully surrender. Pariprasnena. After surrendering, then you can enquire, you can put question. Otherwise, it is illegal. If you do not accept anybody as guru, then don't put question before him to waste his time and your time. This is the process. First of all find out whom you like to accept as guru. Then put question. But sometimes we have to talk with persons who is not student: outsider. That is preaching work. But sastra says that one should approach a guru, and with surrender he would ask him, and guru will talk with a person who is surrendered. Otherwise, there is no necessity of talk, because he will not accept. One who has come to challenge the guru, so he will simply waste time. He will not accept. But a disciple who has surrendered, he will accept. Therefore talking is recommended between guru and disciple, not outsider. Tad-vijnanartham sa gurum eva abhigacchet [MU 1.2.12]. This is essential. And guru trains the disciple according to the Vedic principle. Therefore there are division of varna and asrama.