that set them to work and makes a medium for them. It's the nature of wood and stone yielding to the knife that raises the idea of shaping them, and with plenty of wood and stone the shaping will go on. I look at it, that such ideas as are mixed straight away with all the other elements of life are powerful along with 'em. The slower the mixing, the less power they have. And as to the causes of social change, I look at it in this way—ideas are a sort of parliament, but there's a commonwealth outside, and a good deal of the commonwealth is working at change without knowing what the parliament is doing."
"But if you take ready mixing as your test of power," said Pash, "some of the least practical ideas beat everything. They spread without being understood, and enter into the language without being thought of"
"They may act by changing the distribution of gases," said Marrables; "instruments are getting so fine now, men may come to register the spread of a theory by observed changes in the atmosphere and corresponding changes in the nerves."
"Yes," said Pash, his dark face lighting up rather impishly, "there is the idea of nationalities; I daresay the wild asses are snuffing it, and getting more gregarious."
