There is a cliche that men want their women to be ladies in public and hookers behind closed doors. I want my woman to be the sharper image robot so that she can be turned off.
Seal the openings, shut the doors, and until your last day you will not be exhausted. Widen the openings, interfere, and until your last day you will not be safe.
The traveler has to knock at every alien door to come to his own, and one has to wander through all the outer worlds to reach the innermost shrine at the end.
Evolutionary biology is genuinely scientific, but more than that it opens the door to a world more marvellous than any Christian fundamentalist has ever read into the pages of the Bible.
Since trade ignores national boundaries and the manufacturer insists on having the world as a market, the flag of his nation must follow him, and the doors of the nations which are closed against him must be battered down. Concessions obtained by financiers must be safeguarded by ministers of state, even if the sovereignty of unwilling nations be outraged in the process. Colonies must be obtained or planted, in order that no useful corner of the world may be overlooked or left unused.
I can't imagine I could have become the person I am now without books. Books became synonymous with freedom. They showed that you could open doors and walk through.