Not always. I know someone who narrowly avoided Auschwitz who would beg to differ; her worst enemies were definitely external.
True, but barely. For how long do you think she would have had to plan and execute fully rationally in order to prevent Auschwitz. I think that it would have been a lot of work, but not insanely much work if done honestly.
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).