The quote from J.R.R. Tolkien's "The Silmarillion" suggests that those who propagate falsehoods will ultimately face the consequences of their actions. Dishing out lies may seem easy in the short-term, but it leads to inevitable repercussions. Lies can create a cycle where the deceiver eventually bears the burden of their deceit.

Furthermore, the latter part of the quote emphasizes that while the liar may find temporary relief, they will not truly escape the labor of their deceitful actions. Others may do the work of truth and justice while the liar reposes, highlighting a moral imbalance. Ultimately, the quote reflects on the importance of honesty and the eventual accountability for one's actions.