I really wanted to retire and rest and spend more time with my children, my grandchildren and of course with my wife.

Imagination is always the fabric of social life and the dynamic of history. The influence of real needs and compulsions, of real interests and materials, is indirect because the crowd is never conscious of it.

This report, by its very length, defends itself against the risk of being read.

It only stands to reason that where there's sacrifice, there's someone collecting the sacrificial offerings. Where there's service, there is someone being served. The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.

The pace of progress on Mars depends upon the pace of progress of SpaceX.