“The 2nd law of thermodynamics has the same degree of truth as the statement that if you throw a tumblerful of water into the sea, you cannot get the same tumblerful of water out again.”
in a letter to Lord Rayleigh, as quoted in John William Strutt, Third Baron Rayleigh http://books.google.com/books?id=cKk5AAAAMAAJ (1924), p. 47.
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James Clerk Maxwell 27
Scottish physicist 1831–1879Related quotes

On the theme of water.
Music is a Prayer:An interview with Hariprasad Chaurasia by Ian Gottstein

“You cannot step twice into the same river, for other waters are continually flowing in.”
Originally published in The Origin of Species by Charles Darwin (1872).

As translated by Ejvind Haas
Siddhartha (1922)
Context: When you throw a rock into the water, it will speed on the fastest course to the bottom of the water. This is how it is when Siddhartha has a goal, a resolution. Siddhartha does nothing, he waits, he thinks, he fasts, but he passes through the things of the world like a rock through water, without doing anything, without stirring; he is drawn, he lets himself fall. His goal attracts him, because he doesn't let anything enter his soul which might oppose the goal. This is what Siddhartha has learned among the Samanas. This is what fools call magic and of which they think it would be effected by means of the daemons. Nothing is effected by daemons, there are no daemons. Everyone can perform magic, everyone can reach his goals, if he is able to think, if he is able to wait, if he is able to fast.

Source: Sayings of Sri Ramakrishna (1960), p. 22
Context: Water and a bubble on it are one and the same. The bubble has its birth in the water, floats on it, and is ultimately resolved into it. So also the Jivatman (individual soul) and the Paramatman (supreme soul) are one and the same, the difference between them being only one of degree. For, one is finite and limited while the other is infinite; one is dependent while the other is independent.