Needs must

Then I walked about, till I found on the further side, a great river of sweet water, running with a strong current; whereupon I called to mind the boat-raft I had made aforetime and said to myself, "Needs must I make another; haply I may free me from this strait. If I escape, I have my desire and I vow to Allah Almighty to forswear travel; and if I perish I shall be at peace and shall rest from toil and moil."

“Needs must,” and the haughty summons of Britain rings even in the impregnable heart of Thibet. This is the mission of Empire, the will of a dominant people bent on advancing the interests of trade.

"Needs must and all that – and the devil so often does, doesn't he?" “Excuse me?" "Drives – the devil. Such a relentless old bugger."