To sail is necessary, to live is not.
Source, in full
"πλεῖν ἀνάγκη, ζῆν οὐκ ἀνάγκη", Plutarch, Lives. Pompey 50.1. ’The needs of the state (to supply their starving people with grain brought by ship) outweigh the needs of the individual, such as a sailor who would prefer not to risk death by leaving port in a violent storm to pick up a grain shipment.'