Le Chatelier's Principle

Any system in stable chemical equilibrium, subjected to the influence of an external cause which tends to change either its temperature or its condensation (pressure, concentration, number of molecules in unit volume), either as a whole or in some of its parts, can only undergo such internal modifications as would, if produced alone, bring about a change of temperature or of condensation of opposite sign to that resulting from the external cause.

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This is what written in the notes given by my A-level lecturer. It's a bit 变态right....but I think it's useful in helping students to understand Le Chatelier's Principle, because the students need to analyse the (archaic) language, and when they understand the language, they understand the principle. One bird two stone! Sorry, is one stone two birds. Also, you can 顺便agak the historical understanding/development of the relevant theories, like what they meant by "cause", "influence", "external" etc, and what are the modern equivalents of those terms.

I really think this is better than those "concise" notes.

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Likewise, Newton's First Law:

Every body perseveres in its state of being at rest or of moving uniformly straight ahead, except insofar as it is compelled to change its state by forces impressed.

This sentence and I printed out and stick on the wall in my room when I was Form 4, because (if I'm not mistaken), this is the English translation of what Newton has written in his Principia Mathematica in Latin.