Yet the law of the parabolic motion would be resolvable into the very same simple laws into which that of the elliptical motion is revolved, namely, the law of the permanence of rectilineal motion, and the law of gravitation.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
In ascribing those motions to a general law which obtains between all particles of matter, and in identifying this with the law by which bodies fall to the ground; a kind of motion which the vortices did not, and as it was rectilineal, could not, explain.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
rectilineal figures are divided into triangles, quadrangles, pentagons, etc.
"Logic, Inductive and Deductive"
William Minto