“[Some diseases] are probably always present in population 'resrvoirs'... and in times of malnutrition or other adverse conditions [manifest]... as population controls.”

“Human population growth is probably the single most serious long-term threat to survival. We're in for a major disaster if it isn't curbed... We have no option. If it isn't controlled voluntarily, it will be controlled involuntarily by an increase in disease, starvation and war.”

“Either a species learns to control its own population, or something like disease, famine, war, will take care of the issue.”

“‎Using his burgeoning intelligence, this most successful of all mammals has exploited the environment to produce food for an ever increasing population. Instead of controlling the environment for the benefit of the population, perhaps it's time we controlled the population to allow the survival of the environment.”

“The Three Theorems of Psychohistorical Quantitivity:The population under scrutiny is oblivious to the existence of the science of Psychohistory.The time periods dealt with are in the region of 3 generations.The population must be in the billions (±75 billions) for a statistical probability to have a psychohistorical validity.”

“This was yet another colonial fascination: to create the conditions of misery in a population, then subject it to social or medical experimentation.”