This is an example sentence from my textbook:
Here "非" has the meaning "not" or "non-".
I would translate it to something like:
Aside from studying using language to express your deep philosophical thoughts and emotions, you also must study non-language methods of expression.
I'm having trouble wrapping my mind around what is meant by "non-language methods of expression".
At first, I thought this might be referring to gestures, but gestures are also a kind of language, namely body language or "肢体语言".
What is meant by a non-language method of expression?