Money is the root of all evil

Generated image of the devil and a pile of money
The idiom money is the root of all evil means that the strong desire for money can cause people to behave in harmful or dishonest ways.

The phrase comes from a line in the Bible, in the First Letter to Timothy, which says that the love of money is a root of all kinds of evil. Over time the wording was shortened and became a common proverb in everyday English.

After watching the partners argue bitterly over profits, he muttered that money is the root of all evil.