We've related, a number of times, that it's impossible to create (i.e., write) out of thin air. For example, we shared that Sylvia Plath reportedly related:
Everything in life is writable about if you have the outgoing guts to do it, and the imagination to improvise.
The final lesson a writer learns is that everything can nourish the writer. The dictionary, a new word, a voyage, an encounter, a talk on the street, a book, a phrase learned.