This quote suggests that true reverence should be directed towards the universe as a whole, rather than the man-made constructs of religion that are often designed for convenience. It implies that the grandeur and mystery of the universe, with its natural laws and phenomena, deserves our awe and respect more than the religious doctrines that have been created to suit human needs and desires.

The phrase "True piety for the universe" is an invitation to appreciate the vastness and complexity of the universe. It emphasizes a kind of spirituality that is rooted in the natural world and its laws, rather than in human-centered beliefs and rituals.

The second part of the quote, "but no time for religions made for man’s convenience," is a critique of the ways in which religions can be self-serving. It suggests that religions are often constructed in ways that make them easy and convenient for people to follow, rather than challenging them to confront the mysteries and complexities of the universe.

Applying this quote to today’s world, it could be interpreted as a call to shift our focus from human-centered concerns to a broader, more universal perspective. This might involve, for example, prioritizing environmental sustainability over short-term economic gain, or seeking to understand and respect cultures and belief systems that are different from our own.

In terms of personal development, this quote could inspire us to cultivate a sense of awe and wonder about the universe, and to seek knowledge and understanding for its own sake, rather than for personal gain or convenience. It could also encourage us to question the beliefs and values that we have inherited from our culture or religion, and to develop our own, independently-thought perspectives.