"Oh, are we ever safe ?" she said.

"Especially when we are happy?
That quicksand makes one think." "Never spoil the present by thinking of the future!" said Knight sententiously.
She took him seriously.

"I don't.

I want to keep the present just as it is--just as it is.

I would like to stay with you here for ever and ever, but in another half-hour--in less--the tide will be racing over this very spot, and we shall be gone." Her voice vibrated; she cast a glance behind.