The most significant exponent of the learned Alexandrian poetry was also recently named the first modern poet, and you might also consider the first post-modern poet, if the prize had not been already attributed to Homer.
Callimachus is indeed a poet of great ability and capacity for innovation and happy, feeding with sophisticated doctrine of the poetic tradition before, knows weave texts and literary genres, reaching a refined balance between imitation and variation, which requires constant self-awareness and the author of its tools, and the complicity of recognition from his audience, now of readers and not more than listeners, as they were in the oldest age.