This quote by Xenophon stresses the value of accuracy over speed. He is suggesting that it is better to take the time to make sure that something is done properly, instead of rushing through it and making errors. This is especially real in situations where precision is vital, such as in the military or in treatment. In these cases, an error can have major effects.
Xenophon's quote can also be applied to daily life. For example, when finishing a task at work or school, it is much better to take the time to make certain it is done correctly than to hurry through it and make mistakes. This is particularly true when precision is essential, such as when writing a paper or finishing a project.
Xenophon's quote is a tip that accuracy is necessary in lots of elements of life. Making the effort to ensure that something is done correctly is often more crucial than speed. This is especially true in situations where precision is essential, such as in the military or in treatment. By making the effort to guarantee accuracy, we can prevent making errors that can have major effects.