The foundation of appreciation of ugliness philosophy should be irrationalism if that of aesthetic philosophy is rationalism. Therefore

compared with the aesthetic attention to human’s rational power of conquering nature

the appreciation of ugliness philosophy pays more attention to man’s irrational abilities such as instinct desire

morbid personality

and life alienation. In general

the appreciation of ugliness in Dostoevsky’s works is reflected in three aspects as follows: firstly

it accepts and recognizes the natural life desire; secondly

it reveals some abnormal phenomena of life such as distorted personality and metaphrenia; finally

it criticizes the life alienation phenomenon caused by nihilism. The author’s appreciation of ugliness not only made his works a great success

but also deconstructed the lofty style of the temporal mainstream——the Naturalists.