A quotation by Nicholas Oresme
It is probable that two proposed unknown rations are incommensurable because if many unknown rations are proposed it is most probable that any [one] would be incommensurable to any [other].
De proportionibus proportionum (1351)
No sector of a circle is so small that two such [bodies bodies moving with uniform but incommensurable velocities] could not conjunct in it at some future time, and could not have conjuncted in it sometime [in the past].
Tractatus de commensurabilitate vel incommensurabilitate motuum cell