This quote by Plato is a tip that it is impossible to be a professional in numerous fields. He is suggesting that it is better to focus on one location of proficiency and end up being a professional in that field, rather than attempting to do numerous things simultaneously. This is due to the fact that it is tough to master multiple abilities and achieve success in all of them. It is much better to focus on one location and end up being a professional in that field, rather than spreading yourself too thin and not having the ability to excel in any of them. This quote is a pointer that it is very important to focus on one location and become a specialist in that field, rather than trying to do too many things at the same time. It is much better to end up being a professional in one field than to be mediocre in numerous.