"The infallibility of the Guardian is confined to matters which are
related strictly to the Cause and interpretation of the teachings; he is
not an infallible authority on other subjects, such as economics, science,
etc. When he feels that a certain thing is essential for the protection of
the Cause, even if it is something that affects a person personally, he
must be obeyed, but when he gives advice, such as that he gave you in a
previous letter about your future, it is not binding; you are free to
follow it or not as you please."