From which poem does "A swift horse often comes, but Bole seldom comes"?

"A swift horse is always there, but Bole is not always there" comes from Han Yu's Four Horses Miscellanies.

Essays 4. Shuo Ma

Author Han Yu? the Tang Dynasty

Where there is Bole, there is a swift horse. A thousand miles away, there are not many boles. Therefore, although there is a famous horse, it is only humiliated by a slave, and it is not called a thousand miles to die in a trough.

A horse can travel thousands of miles, and a stone can eat it all. People who eat horses don't know that they can travel thousands of miles and still eat. This is a horse. Although it has the ability to travel thousands of miles, it looks beautiful only because of lack of food and physical strength, and it is impossible to wait with an ordinary horse. Why not ask it to travel thousands of miles?

If you don't follow the way, you can't make the best use of it, but if you sing it, you can't understand its meaning. If it is implemented, we must face it and say, "There are no horses in the world!" Oh! Is it really innocent? I really don't understand horses!

Translation:

There is Bole in the world (first), and then there is a swift horse. There are often swift horses, but Bole is not often. Therefore, even if there is a precious horse, it is only humiliated in the hands of servants and died in the trough (like ordinary horses), and it is not called a swift horse.

A horse that has traveled thousands of miles can sometimes eat a stone of grain after a meal. People who feed horses don't know that they can travel thousands of miles to feed them (like ordinary horses). Although such a horse has the ability to travel thousands of miles a day, its food intake and physical strength are insufficient, and its talents and virtues cannot be displayed outside. If you want to be an ordinary horse, you can't do it. How can you ask it to travel thousands of miles?

If you don't whip a swift horse in the right way, but you can't try your best to feed it, you can't understand its meaning by listening to its neighing. You face it with a whip and say, "There is no swift horse in the world!" " Alas, is there really no maxima? Probably I really don't know Maxima!

This story tells us:

Some people do have real talents, but they may not be appreciated and reused. Therefore, people like Bole are needed to find and recommend. Bole has arrived, and the price of good horses has increased, which shows the importance of authority.

However, we should not blindly worship and trust others, but also be wary of some mediocre people using or falsely using the name of authority to raise their status to achieve their goals.

As an authority figure, one should speak and do things according to one's conscience, seek truth from facts, cherish one's reputation, and not be blinded by greed and seek benefits from others.