“A pessimist is a man who has been compelled to live with an optimist.”

Simplified Meaning:

The saying means that someone who tends to see the negative side of things (a pessimist) may have become that way because they spent a lot of time with someone who always sees everything positively (an optimist). Imagine two friends: One always looks at the bright side, like seeing a rainy day as a chance to play in the puddles. The other friend, who used to be neutral, gets tired of the constant cheerfulness and starts focusing on the bad part, like getting wet and cold. Over time, this second friend might become more negative because they feel overwhelmed by the endless optimism of the first. The key idea is that people can be influenced by those around them, and sometimes too much positivity can actually make someone else feel more negative. If you ever feel like this, try finding a balance between optimism and realism in your life.