Shortly after returning to Paris from Kristiania and the premiere of On the Mountains, Delius moved to a small apartment in the Petit-Montrouge quarter, bounded by Montrouge to the south and Montparnasse to the north. After a few years in rural surroundings, he was now in a densely populated workingclass neighbourhood to which many young artists were moving.

Some notion of Delius's personality and appearance at that time is to be gained through the eyes of those who observed him. Artist Jelka Rosen, his future wife, gives us this portrait:

The English composer Isidore de Lara was also in Paris and found Delius ‘ascetic and unworldly’, but, on getting better acquainted, concluded: ‘I never saw a man with such irresistible will, and as it is directed with intelligence, he is sure to come to the front. […] He seems to have the working capacities of a brewer's horse.’ Delius was still living on allowances from his father in Bradford and his uncle in Paris, and could rarely allow himself luxuries. ‘His means were very small, and he cooked his own meals’, recalled de Lara. ‘I have often dined with him in his room on a couple of eggs.’ A young English-American pianist, Harold Bauer, lived nearby, and half a century later his encounter with Delius was still clear in his memory: