Devotee: They say this will be a big problem in the future of this century, a great shortage of trees.
Prabhupāda: Yes. They are creating simply problems. Materialistic way of life means anartha. Therefore Prahlāda Mahārāja says that don't try for all these nonsense things. It is simply killing oneself or lessening the..., or making useless the duration of life. What is this? Bhayam. What does it say? You just read. Simply...
Nalinīkaṇṭha: Puṁso varṣa-śataṁ hy āyus tad-ardhaṁ cājitātmanaḥ niṣphalaṁ yad asau rātryām (SB 7.6.6).
Prabhupāda: No, before that.
Nalinīkaṇṭha: Tat-prayāso na kartavyo yata āyur-vyayaḥ param, na tathā vindate kṣemaṁ mukunda...
Prabhupāda: Hm. Āyur-vyayaḥ. Simply spending the duration of life. Just like you have got some bank balance, and if you spend it for useless purposes. Similarly, we have got some bank balance or duration of life balance. Our death begins.... From the next moment of our birth, death begins. Suppose I'll live hundred years. So I am born, one day passed means one day is reduced from hundred years. The friends come, "How old is your child?" the parents says "He is three years old." That means three years he has died. Ninety-seven years balance. So if we waste our, this balance of life for nothing, that is forbidden. Kevalāyur-vyayaḥ. You utilize the balance for some good purpose. No, we are wasting it. The so-called economic development means we are wasting the balance of our life. This is the philosophy.