[7][8] Stoilov was a member of the Macedonian Scientific and Literary Society and served as its secretary.
He was involved in the third official act of the Society, which included documenting minutes of its 29 December 1902 session.
In July, he arrived in Sofia and presented himself as a volunteer at the Overseas Representation of the IMARO, from where he was assigned to a detachment going to Ottoman Macedonia under Nikola Dechev.
[13] As a socialist-internationalist, he claimеd that he was not going to die for a certain nation or as a patriot, but as a revolutionary fighting for the good of humanity.
[14] Stoilov also authored "The Kilkis Vampire" ("Кукушкият вампир"), a didactic novel written in Bulgarian.