There are many reasons why great philosophers choose to be single, and the most important ones are due to their concepts, personality and life. Some philosophers have distorted views on love and marriage and have a rejection mentality, such as Schopenhauer and Nietzsche. They avoid intimate relationships because they have serious psychological shadows. They are paranoid, sensitive and vulnerable. Many geniuses have lonely and weird personalities and lack the ability to live and socialize. The lack of such abilities may even be seen as a trait of genius.

These are internal reasons, and of course there are external reasons, such as education. Women’s education level was low, especially before the 20th century, as well as the gap in knowledge and intelligence.

Schopenhauer has a famous saying: Only philosophers can get happiness from marriage, but philosophers do not get married. Russell believes that the meaning of love and marriage lies only in happiness, and happiness must be based on freedom and voluntariness. If love ends up with only responsibility, it will make the remaining time in vain.

Philosophers have superior intelligence and it is difficult for them to speak the same language as ordinary people. They don't like to get along with ordinary people. They find it troublesome, boring and a waste of time. They probably regard their wife as another ordinary person. It is difficult for them to find someone to talk to in life, and it is even more difficult to find someone of the opposite sex whose mind matches theirs. Philosophers pay attention to the soul. They value the union of souls even more. In their eyes, a marriage without spiritual communication must not be considered a marriage. They are perfectionists.