Why do you say that if you want to do a good job, you must sharpen your tools first?

"Ming Xiang Mu" said: "The husband is a marshal. Heart, strategist also. Hand, lieutenant also. A pointer is a foot soldier. Paper, terrain also. Author, Ge Jiye. Ink, food and grass. Inkstone, capsule cable also. Paper is not only thin, but the metaphorical dawn will make horses walk on the thorny and muddy fields, and the galloping will be the first to flourish. The pen is not smart and healthy, and it is a metaphor for being strong, breaking the blunt soldiers and chopping thorns. Ink is not refined and mysterious, but it is better to practice and train. If there is insufficient food and grass, there will be hunger. Why should we be angry? If you don't delete the inkstone, the journey of the teacher is in the ascendant, and your life is complaining about food. Why is it so powerful? We shouldn't waste one of the four, especially paper and pens. As the saying goes, it is well-founded to be able to write without choosing a pen. If a husband wants to do a good job, he must sharpen his tools first.