“First, we’ve got population. The world today has 6.8 billion people. That’s headed up to about nine billion. Now, if we do a really great job on new vaccines, health care, reproductive health services, we could lower that by, perhaps, 10% or 15%. But there, we see an increase of about 1.3.”
Bill Gates
Quote is found at time code 4:31 in his Ted Talk ‘Innovating to zero!’ from 2010.