In and after 1964 when I began to concern myself with the biological issues, and particularly from 1967 onwards, the extent of the problems over which I felt uneasy increased to such a point that in 1968 I felt a compelling urge to make my views public.
True luxury is being able to own your time - to be able to take a walk, sit on your porch, read the paper, not take the call, not be compelled by obligation.