“A theory is the more impressive the greater the simplicity of its premises, the more different kinds of things it relates, and the more extended its area of applicability. Therefore the deep impression that classical thermodynamics made upon me. It is the only physical theory of universal content which I am convinced will never be overthrown, within the framework of applicability of its basic concepts.” — Albert Einstein
One usually learns that icebergs contribute to the increase of sea level only when they are dumped into the ocean, not when they subsequently melt. Density differences between fresh and salt water make the issue more complicated, however.
The Natural Heat Engines Enquirer 