Hold the book far away from you, so that the detail of the picture vanishes and only the broad masses of the composition stand out.

You still have what is essential.

The picture is one in which Italian feeling and sentiment blend with Flemish technique and love of little things.

There has always been something of a mystery about the picture, and you must not be surprised some day if you hear it asserted that Antonello did not paint it at all.

Such changes in the attributions of unsigned paintings are not uncommon.
One of the greatest pioneer artists of the fifteenth century was Andrea Mantegna of Padua in the north of Italy.