The phrase "Money is soon parted from the person who doesn't know how to manage it" is an old proverb that means that when people don't have the necessary skills to handle their finances, they are likely to overspend and quickly run out of money. This phrase emphasizes the importance of financial literacy and responsible money management to avoid financial instability and hardship. It also implies that personal financial decisions have consequences, and it is essential to make wise choices to achieve financial stability and success.