Two magnitudes whether commensurable or incommensurable, balance at distances reciprocally proportional to the magnitudes. - Archimedes

"Gebt mir einen festen Punkt auf dem ich stehen kann und ich werde die Welt aus den Angeln heben!"

"Give me a place to stand on, and I will move the Earth!"

The centre of gravity of any cylinder is the point of bisection of the axis.

First then I will set out the very first theorem which became known to me by means of mechanics, namely that Any segment of a section of a right angled cone (i.e., a parabola) is four-thirds of the triangle which has the same base and equal height,
and after this I will give each of the other theorems investigated by the same method. Then at the end of the book I will give the geometrical [proofs of the propositions]...