Among the stoic philosophers, followers of Zenon, there was also a certain Sphere of Bosporus, a disciple of Cleanth. Regarding this Sphere, there is the only evidence of Diogenes of Laerte, in which the latter, without giving other details about the life and teachings of the Sphere, tells a funny story that has adventured with the Sphere in Alexandria. Diogen says that Sphere "... having achieved great success in the sciences, left... to Ptolemy Philopator. Here one day there was a dispute as to whether the sage was susceptible to false opinions, and the Sphere argued that it was not. The king wanted to inculcate him, and commanded him to give to the table pomegranate apples of wax; The spheres took them as real, and the king cried out that Sphere and accepted a false representation. But Sphere immediately answered that he had accepted not what was before him — grenades, but that there was reason to consider them as grenades; but the understanding and well-founded view are different things.