Patience may be a virtue, but it's a difficult one to cultivate — especially in a world that is moving ever-faster. Yet with this quote, Enlightenment-era philosopher Jean-Jacques Rousseau reminds us that patience also comes with great rewards. Such rewards are never instant, but can increase over time, like an investment that must be allowed to mature. Research suggests that people who cultivate patience experience better mental and even physical health, and have happier relationships with others over the course of their lives.