'You, who have the spark'

In a letter from the novelist Emile Zola, to the artist Cezanne:

'There are two men inside the artist, the poet and the worker.
One is born a poet, one becomes a worker. And you, who have
the spark, who possess what cannot be acquired, you complain
when all you have to do to succeed is exercise your fingers,
become a worker.'

(Letter of 16 April 1860, in Zola, 1978, p. 146)