When Lucifer is known—and he must be known because it is a question of keeping him in his rightful sphere and we are here concerned with spiritual forces in the universe—we realize with horror that he has not the very least understanding of any harmless delight or amusement which a man may take in things of the outer world.
Lucifer has not the remotest sympathy for harmless, amused delight aroused by something outside. What he does understand is any emotion that is kindled by the inner being of man. Lucifer well understands when a desire in man awakens voluptuousness and when some process that would otherwise remain unconscious is called in this way into the region of consciousness.
But in spite of his wisdom—and Lucifer has, of course, sublime wisdom—he simply cannot understand a harmless joke occasioned by some outer event. This lies outside his province. And one can protect oneself against the attacks which Lucifer is so prone to make, precisely by taking innocent joy and delight in the world outside. Lucifer cannot bear this; it vexes him terribly, for instance, if we take delight in a good caricature.
Source: Rudolf Steiner – GA 170 – Memory and Habit – Lecture III – 28 August 1916, Dornach
https://rsarchive.org/Lectures/GA170/English/APC1948/19160828p02.html
The great Rudolf Steiner Quotes Site 