Thomas a Kempis

Astonishingly, in spite of decades of research, there is no agreed theory of cancer, no explanation for why, inside almost all healthy cells, there lurks a highly efficient cancer subroutine that can be activated by a variety of agents - radiation, chemicals, inflammation and infection.

I mean there are many, many people in all sorts of different countries who don't have a great life, who are subject to injustice. Are we obliged to take all of them who come here? I think the answer is 'Not necessarily.'