Intolerance on the part of the authorities of Maryland directed toward Protestants might have brought a swift overthrow of the whole project. The instructions given for the first voyage already cited show throughout the need for extreme caution in the face of extreme peril. It is required of the governor and commissioners that "they be very careful to preserve the peace amongst all the passengers on shipboard, and that they suffer no scandal nor offense to be given to any of the Protestants." The rulers are to instruct the Catholics to be silent "upon all occasions of discourse concerning matter of religion," and those in authority are to "treat the Protestants with as much mildness and favor as justice will permit." These instructions were to hold good after landing, and in one notable case of religious dissension after the arrival in Maryland, justice was meted out against the Catholic offender in a way that showed a disposition to observe this policy of conciliation toward Protestants at the expense of some unfairness toward Catholics. Very early a proclamation was issued for the suppression of all religious disputes, and Copley, the business administrator of the Jesuits, thought they ought to be put down for fear the writings should be sent to the governor of Virginia. [Sidenote: Necessary ambiguity.] [Sidenote: Note 22.] The ambiguous charter of Maryland was a necessary hypocrisy. The plan of toleration was also inevitable, and it was carried no further than necessity required, for in that age, when toleration was odious, a liberal policy had also its perils. The Act for Church Liberties of 1639 was a fine example of the studied ambidexterity of the Maryland government. It was enacted "that Holy Church within this province shall have all her rights, liberties, and immunities, safe, whole, and inviolate in all things." Holy Church here is a deliberate substitution for "the Church of England" in a similar phrase of Magna Charta. Such an act was worthy of Bunyan's Mr. Facing-both-ways. Interpreted by judges holding office at the will of a Catholic proprietary, it could have but one meaning. For the outside world it might bear another sense. It did all that could be done in the circumstances for the Roman Catholic religion and for Catholic ecclesiastics. XIX. [Sidenote: Puritan settlers invited.] [Sidenote: Note 23.] [Sidenote: Winthrop's Journal, ii, 148, 149.]