Hans Bethe Quote
2.7 x 1014 grams per cubic centimeter. This is the density of matter inside a large atomic nucleus, and in effect the nucleons in the core [of a star] merge to form a single gigantic nucleus. A teaspoonful of such matter has about the same mass as all the buildings in Manhattan combined.
In: T. Ferris (ed.), World Treasury of Physics, Astronomy, and Mathematics - How a Supernova Explodes (p. 285)