"この世のすべてのものを軽く持ちなさい。"

Simplified Meaning:

It's suggesting that we should not get too attached to material things, like money or possessions. Imagine you have a favorite toy, but one day it breaks or gets lost. If you were too attached to it, you'd be very upset, but if you remember that it's just a toy and not the most important thing in your life, you can move on more easily. In history, many wise people like monks and philosophers have taught that true happiness and peace come from within, not from what we own. By not holding on too tightly to things, we can find it easier to cope with changes and losses. For example, if you lose your job, it's easier to stay positive and look for new opportunities if you're not overly attached to the specific job you had. This mindset helps reduce stress and makes it easier to focus on what really matters, like relationships and personal growth. It's a reminder to value experiences and people more than material items.