This quote implies that once a person has experienced true happiness, they will find it difficult to settle for sadness or merely existing without joy. This is because happiness, once known, raises one’s standards of what life can and should be like. It is a transformative experience that changes one’s perspective on life.

The concept of knowing happiness is not about fleeting moments of joy but about a deep, profound satisfaction and contentment in life. Once you’ve tasted this level of happiness, accepting anything less, such as sadness or discontentment, becomes a challenge. You’ve seen what’s possible, and you yearn for that level of fulfillment and joy.

In essence, this quote is about the human spirit’s resilience and its incessant quest for happiness. It emphasizes the idea that once we’ve experienced true happiness, we become more resilient in the face of sadness. We’re less likely to accept sadness as a permanent state because we know there’s something better out there.

In the context of today’s world, this quote could be seen as a call to action to seek out happiness actively. In a world often characterized by stress, anxiety, and discontentment, it’s easy to settle into a state of persistent sadness or dissatisfaction. However, those who’ve known happiness understand its transformative power and are therefore more likely to seek it out, even in challenging times.

In terms of personal development, this quote suggests that experiencing happiness can be a powerful motivator for growth and change. Once you’ve known happiness, you’re more likely to make choices that align with this state of being. You might be more inclined to pursue a career you love, cultivate healthy relationships, and engage in activities that bring you joy. In this way, knowing happiness can guide your personal development journey, influencing your decisions and shaping your life in a way that maximizes joy and minimizes sadness.