Eureka! (I have found it!).

Equal weights at equal distances are in equilibrium and equal weights at unequal distances are not in equilibrium but incline towards the weight which is at the greater distance.

The perimeter of the earth is about 3,000,000 stadia and not greater.

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

Eureka! [I have found it!] On discovery of a method to test the purity of gold.

Having been the discoverer of many splendid things, he is said to have asked his friends and relations that, after his death, they should place on his tomb a cylinder enclosing a sphere, writing on it the proportion of the containing solid to that which is contained.

The diameter of the earth is greater than the diameter of the moon and the diameter of the sun is greater than the diameter of the earth.