The famous sayings about calligraphy are:

1. The brush strokes are like clouds of smoke.

2. When you want to write, you should pay attention to it instead of listening to it. If you have no worries and concentrate, if your mind is upright and your energy is harmonious, you will be in harmony with the wonderful. If your mind is not upright, the book will be slanted; if your ambition is not harmonious, your words will fall down.

3. Hands and divine luck, art comes from experience, one's ambition is in writing, one's crown cannot be moved, poverty and lowliness cannot be surrendered, one's awe-inspiring contentment lasts the rest of his life.

4. The book must be clear and thick, and the clearness and thickness must be based on the heart. Otherwise, although the book is spared from thinness and turbidity, it will only be a reflection of others.

5. Academic scriptures and theories all originate from the heart. If the heart is not right, the actions will be wrong. Liu Gongquan said: If the heart is right, the pen will be right.