Early in the twentieth century, two famous scientists developed different ideas about dreams. Austrian psychiatrist Sigmund Freud published a book called The Interpretation of Dreams in 1900. Freud believed people often dream about things they want but cannot have. These dreams are often linked to sex and aggression.

For Freud, dreams were full of hidden meaning. He tried to understand dreams as a way to understand people and why they acted or thought in certain ways. Freud believed that every thought and every action started deep in our brains. He thought dreams could be an important way to understand what is happening in our brains.

Freud told people what their dreams meant as a way of helping them solve problems or understand their worries. For example, Freud said when people dream of flying or swinging, they want to be free of their childhood. When a person dreams that a brother or sister or parent has died, the dreamer is really hiding feelings of hatred for that person. Or a desire to have what the other person has.

Swiss psychiatrist Carl Jung worked closely with Freud for several years. But he developed very different ideas about dreams. Jung believed dreams could help people grow and understand themselves. He believed dreams provide solutions to problems we face when we are awake.

He also believed dreams tell us something about ourselves and our relations with other people. He did not believe dreams hide our feelings about sex or aggression.

September is an exciting month in every college freshman’s life. For many, it’s the first time that they’ve left home to live in a new environment. But after the hustle and bustle of a few weeks, excitement gives way to a less enjoyable emotion—homesickness.

Homesickness manifests itself in many ways. You may miss mum’s cooking, your pets, or even your old bed. All this becomes a fond memory of the past. Homesickness can be a bitter feeling for many students, especially when faced with the challenges of settling into an unfamiliar environment.

But remember, you’re not alone. According to a recent BBC article, 70 percent of British college students experience homesickness. In this increasingly globalized world in which people migrate to faraway places for a relationship, education or work, homesickness is a feeling shared by many adults.

Homesickness can have similar symptoms to depression and in extreme cases it can develop into a panic attack. As for the term, homesickness or nostalgia wasn’t invented until the 17th century. It was considered a disorder by a Swiss physician, who attributed soldiers’ mental and physical discomfort to their longing to return home, “nostos” from Greek, and the accompanying pain, “algos”.

Studies in recent years, however, have shown that nostalgia may have some benefits to our mental health. After a decade of surveys and researches, Constantine Sedikides, a US social psychologist, found that nostalgia is what makes us human. He explains that nostalgia can resist loneliness, boredom and anxiety. Therefore, it’s necessary for college students to learn some ways to overcome the uncomfortable feeling.