To begin with, I will quote the first paragraph in the section on prayer found in the Constitutions (this is in what was called the "new" Constitutions in 1982 but printed in the same book with our 1815 Constitutions that still are valid for our spirit. I will begin my reflections on #18 but you should always go back to the fact that prayer and the interior life are essential.
"The spirit of the Society
is essentially based upon prayer and the interior life
since we cannot glorify the adorable
Heart of Jesus worthily
except inasmuch as we apply ourselves
to study His interior dispositions
in order to unite and conform ourselves to them."
(Abridged Plan, 1815)