If I were reincarnated, I would wish to be returned to Earth as a killer virus to lower human population levels.

I don't have anything to do with the washing up.

Cities are 2% of the earth's crust, but they are 50% of the world's population.

The optimum human population of earth is zero

To consider the Earth as the only populated world in infinite space is as absurd as to assert that in an entire field of millet, only one grain will grow.

Hong Kong has created one of the most successful societies on Earth.