megalomania
n. 妄想自大狂; (對浮誇方案的)狂熱
Megalomania is the belief that you are more powerful and important than you really are. Megalomania is sometimes a mental illness.
1. a psychological state characterized by delusions of grandeur
Early success may lead to megalomania.
少年得志可能導致妄自尊大.
If it can cure nothing else, it can cure man of megalomania.
它如果不能治癒別的疾病, 至少能夠治癒人類的狂妄自大的病.