 First, anyone identified as a Pythagorean by an early source uncontaminated by the Neopythagorean glorification of Pythagoras (see below) can be regarded as a Pythagorean. This would include sources dating before the early Academy (ca. 350 BCE), where Neopythagoreanism has its origin, and Peripatetic sources contemporary with the early Academy (ca. 350–300 BCE, e.g., Aristotle, Aristoxenus and Eudemus), who, under the influence of Aristotle, defined themselves in opposition to the Academic view of Pythagoras.