had invoked. The martyrs died for conscience, but not for liberty. To-day the greatest of the Churches demands freedom of conscience in the modern States which she does not control, but refuses to admit that, where she had the power, it would be incumbent on her to concede it.
If we review the history of classical antiquity as a whole, we may almost say that freedom of thought was like the air men breathed. It was taken for granted and nobody thought about it. If seven or eight thinkers at Athens were penalized for heterodoxy, in some and perhaps in most of these cases heterodoxy was only a pretext. They do not invalidate the general facts that the advance of knowledge was not impeded by prejudice, or science retarded by the weight of unscientific authority. The educated Greeks were tolerant because they were friends of reason and did not set up any authority to overrule reason. Opinions were not imposed except by argument; you were not expected to receive some "kingdom of heaven" like a little child, or to prostrate your intellect before an authority claiming to be infallible.
But this liberty was not the result of a conscious policy or deliberate conviction, and therefore it was precarious. The problems
