This quote expresses a hopeful and optimistic outlook towards the 21st century. It suggests that despite the challenges and hardships we may face, there is every reason to believe that this era will be much happier than the previous ones. This is based on the belief that as humanity progresses, so does our capacity for happiness, understanding, and compassion.

The quote implies that with the advancements we have made and continue to make in technology, medicine, communication, and other fields, we have the potential to create a world that is happier than any other era. These advancements can lead to better quality of life, more opportunities, and greater understanding among different cultures and societies.

Furthermore, the quote also suggests that happiness is not just a personal experience, but a collective one. It is not just about individual well-being, but also about societal well-being. This implies that our happiness is interconnected, and that by working together, we can create a happier world for everyone.

In today’s world, this idea can be applied in various ways. For instance, we can use technology to bridge gaps, promote understanding, and spread positivity. We can use advancements in medicine to improve health and well-being. We can use improved communication to foster better relationships and understanding among different cultures and societies.

In terms of personal development, this quote can inspire us to strive for happiness not just for ourselves, but for others as well. It can encourage us to use our skills, knowledge, and resources to contribute to the happiness of others and the betterment of society. It can also remind us that despite the challenges we face, we have every reason to be hopeful and optimistic about the future.