Alkan 's aversion to socialising and publicity , especially following 1850 , appeared to be self @-@ willed . Liszt is reported to have commented to the Danish pianist Frits Hartvigson that " Alkan possessed the finest technique he had ever known , but preferred the life of a recluse . " Stephanie McCallum have suggested that Alkan may have suffered from Asperger syndrome , schizophrenia or obsessive – compulsive disorder .