The Wealth of Nations by Part 5 Chapter 1 Page 294

though the Quakers happen to be the most numerous, the law in reality favours no one sect more than another, and it is there said to have been productive of this philosophical good temper and moderation.

But though this equality of treatment should not be productive of this good temper and moderation in all, or even in the greater part of the religious sects of a particular country, yet provided those sects were sufficiently numerous, and each of them consequently too small to disturb the public tranquillity, the excessive zeal of each for its particular tenets could not well be productive of any very harmful effects, but, on the contrary, of several good ones: and if the government was perfectly decided both to let them all alone, and to oblige them all to let alone one another, there is little danger that they would not