My most important problem was destroying the lines of demarcation that separate what seems real from what seems fantastic. Gabriel García Márquez
People often ask, "What is the single most important environmental/population problem facing the world today?" A flip answer would be, "The single most important problem is our misguided focus on identifying the single most important problem!" Jared Diamond
I think perhaps the most important problem is that we are trying to understand the fundamental workings of the universe via a language devised for telling one another when the best fruit is. Terry Pratchett
The idea that global warming is the most important problem facing the world is total nonsense and is doing a lot of harm. Freeman Dyson
Marxist philosophy holds that the most important problem does not lie in understanding the laws of the objective world and thus being able to explain it, but in applying the knowledge of these laws actively to change the world. Mao Zedong
Global warming is real - it is man-made and it is an important problem. But it is not the end of the world. Bjorn Lomborg