“Ibsen found Munich much to his liking. ‘Many Norwegians live here’, he reported to Johan Thorensen on 21 May  (how that recommendation would have surprised his countrymen!), ‘and I find the air much fresher and more invigorating than in Dreden, a natural result of the proximity of the Alps.’ Ibsen had an almost English passion for fresh air, as visitors to his apartment occasionally discovered to their discomfort. ‘ He needs good air in quantity,’ Hans Midboe was to note twelve years later. ‘Lofty, airy rooms are an absolute necessity to him.’ He was a great one for leaving windows open.
from Ibsen, by Michael Meyer (Pelican, 1974)