Xenophon Ways and Means 6

[1]
  Well now, surely, if none of these proposals is impossible or even difficult, if by carrying them into effect we shall be regarded with more affection by the Greeks, shall live in greater security, and be more glorious; if the people will be maintained in comfort and the rich no more burdened with the expenses of war; if with a large surplus in hand we shall celebrate our festivals with even more splendour than at present, shall restore the temples, and repair the walls and docks, and shall give back to priests, councillors, magistrates, knights their ancient privileges; surely, I say, our proper course is to proceed with this scheme forthwith, that already in our generation we may come to see our city secure and prosperous.

[2]
  Furthermore, if you decide to go forward with the plan, I should advise you to send to Dodona and Delphi, and inquire of the gods whether such a design is fraught with weal for the state both now and in days to come.

[3] And should they consent to it, then I would say that we ought to ask them further, which of the gods we must propitiate in order that we may prosper in our handiwork. Then, when we have offered an acceptable sacrifice to the gods named in their reply, it behoves us to begin the work. For with heaven to help us in what we do, it is likely that our undertakings will go forward continually to the greater weal of the state.