What are the famous aphorisms about "calligraphers"?

The mysterious meaning comes from the surface of things; the profound truth lies in the darkness; it cannot be expressed by ordinary feelings and measured by worldly wisdom. ---Tang·Zhang Huaijin

Studying books can lead to long-term knowledge. ---Zhang Yanyuan of the Tang Dynasty

Sometimes it expresses the ambition to achieve great success, or it expresses the hope of dispelling depression. Although it is noble, it cannot suppress its height, and although it is wonderful, it cannot control its power. ---Zhang Huaijin of the Tang Dynasty

The character must have bone structure, the meat must wrap the tendons, the tendons must hide the meat, and the post must be beautiful and moist. ---Mi Fu, Song Dynasty

One point becomes one word, and one word is the final word. ---Sun Guoting of the Tang Dynasty

The dragons and snakes in his works seem to have gods. ---Tang·Zhang Huaijin

Books originate from nature. ---Han·Cai Yong

Silent voice, invisible appearance. ---Zhang Huaijin of the Tang Dynasty

The pen is written vigorously, like a swan flying high, and the eyes are graceful. ---Jin·Wei Heng

The physical appearance is extraordinary, different from the past and present. Falling pearls and jade, fluttering tassels. ---Tang·Zhang Huaisheng