This quote is a powerful commentary on the purpose of art and communication. The first part, "To dazzle let the vain design," suggests that superficiality and ostentation are empty pursuits, often undertaken by those who are vain. These people focus on creating a spectacle to impress others, but this pursuit is ultimately hollow and lacks substance.

The second part of the quote, "To raise the thought and touch the heart, be thine!" is a call to action, urging the reader to strive for a deeper, more meaningful impact. It suggests that the true goal should be to elevate thinking and touch emotions, to create something that resonates with people on a fundamental level, rather than simply dazzling them with surface-level spectacle.

Applying this idea to today’s world, one could argue that we live in a society that often prioritizes spectacle over substance. Whether it’s social media influencers focusing on appearances or the sensationalism prevalent in news media, there’s a clear emphasis on the "dazzle." However, the quote encourages us to look beyond these superficialities and seek out experiences, relationships, and pursuits that truly "raise the thought and touch the heart."

In terms of personal development, this quote might inspire us to focus on depth and substance in our own lives. It suggests that we should not be satisfied with simply impressing others or achieving surface-level success. Instead, we should strive to create, learn, and grow in ways that genuinely enrich our lives and the lives of those around us. This could mean pursuing a passion even if it’s not glamorous, seeking out meaningful relationships, or taking the time to reflect on our experiences and learn from them.