Say you will go on with it! To turn back now would be death.
We could not do it if we wanted to.

I have been trying to think about it, and I cannot.

That is the truth.

It takes one's breath away.

At the mere thought of it I feel as if I were getting out of my depth." "We have been out of our depths the last month," admitted Barebone, curtly.
And he stood reflecting, while Colville watched him.
"If I go on," he said, at length, "I go on alone." "Better not," urged Colville, with a laugh of great relief.