If extreme poverty is allowed to increase, it will give rise to new problems, including new diseases that will spread from countries that cannot provide adequate healthcare to those that can. Poverty will lead to more migrants seeking to move, whether legally or not, to rich nations.

In the real world, 90% of the money spent on medical research is focused on conditions that are responsible for just 10% of the deaths and disability caused by diseases globally.

In an ideal world, the amount of money we spend on medical research to prevent or cure a disease would be proportional to its seriousness and the number of people who suffer from it.

Peter Singer Quotes