Omit "be" auxiliary or helping verbs ( is, are, was, were, be, being  ) , unless an ongoing action or they appear for emphasis or serve as an equal sign, such as: "Molière is a genius", i.e. Molière = a geniu):

Example (wordy):  Molière is referring to the hypocrites rather than to the Church.

Revision (concise):  Molière refers to the hypocrites rather than to the Church.


Example 2 (wordy):  Lu Xun is describing the condition of all humanity.

Revision (concise):  Lu Xun describes the condition of all humanity.