I feel certain he must.

The very soul of his intellect was in the dream of this ship, and now that it's a reality he must be here still.

Isn't it part of himself?
Isn't it his mind that's working in these wonderful engines of yours, and isn't it his strength that lifts us up from the earth and takes us down again just as you please to turn that wheel ?" "There's little doubt about that, Zaidie," said Redgrave quietly, but earnestly.

"You know we North-country folk all have our traditions and our ghosts; and what more likely than that the spirit of a dead man or a man gone to other worlds should watch over the realisation of his greatest work on earth?
Why shouldn't we believe that, we who are going away from this world to other ones ?" "Why not ?" interrupted Zaidie, "why, of course we will.

And now suppose we come down in more ways than one and go and give poor Mrs.Van Stuyler something to eat and drink.