Santiago spends the night and experiences his recurring dream in a sacristy, the
room in a church where sacred vessels and vestments are kept. It is literally a
sacred place. And yet, just as he rejected his parents' plans that he join the
priesthood, Santiago must leave the sacristy, in order to find God. Thus the episode
with which The Alchemist opens is an ironic one.
The placement of a sycamore tree in the sacristy is highly significant. Sycamores are
native to Egypt, the location of the pyramids Santiago dreams of. Throughout The
Alchemist, Egypt will be Santiago's focus and his goal.
The fact that the old woman's interpretation of Santiago's dream is more or less
identical to the dream itself seems to indicate that we should trust our dreams, taking
them at face value rather than examining them for hidden significance