Brewer's: Dum Spiro, Spero
While I live, I hope; or, While there's life, there's hope. Hope while you live, for who would care to cope
With life's three foes, unpanoplied with hope?
Hope against hope, while fed with vital breath.
Hope be your anchor in the hour of death
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894