Sentence:  “I <WSD>will</WSD> go to you, and we <WSD>will</WSD> fly; but from this moment until then, let us not tempt Providence, let us not see each other. It is a miracle, it is a providence that we have not been discovered. If we were surprised, if it were known that we met thus, we should have no further resource.” 
Meaning of the word marked with <WSD> tags:  Used to express the future tense, sometimes with some implication of volition when used in the first person. Compare (shall). (from 10th c.)