Vonnegut is good but I think (Aldous) Huxley had more to say, at least that resonated more with me.

I recently discovered this 1958 interview of Huxley[1]:

> This is the force which in general terms can be called overpopulation, the mounting pressure of population pressing upon existing resources. …This, of course, is an extraordinary thing; something is happening which has never happened in the world's history before. I mean, let's just take a simple fact that between the time of birth of Christ and the landing of the Mayflower, the population of the earth doubled. It rose from two hundred and fifty million to probably five hundred million. Today, the population of the earth is rising at such a rate that it will double in half a century.

[1]: https://www.youtube.com/watch?v=alasBxZsb40

Funny then, how he could be so wrong. The population is plummeting in many countries, and the rate of decline will only increase. In China, they're looking at each generation halving the previous (or worse).