For when I suppose, for instance, that a given body, A, is at rest, and do not take into consideration other bodies in motion, I cannot affirm anything concerning the body A, except that it is at rest.
Demagun edozein gorputz, A adibidez, geldirik dagoela; mugitzen diren beste gorputz guztiei ez baldin badiet behatzen, A delako gorputzaz ez dut beste deusik erranen, geldirik dagoela baizik.