英语翻译原文：But success shall crown my endeavours.Wherefore not?T

英语翻译
原文：But success shall crown my endeavours.Wherefore not?Thus far I have gone,tracing a secure way over the pathless seas:the very stars themselves being witnesses and testimonies of my triumph.Why not sitll proceed over the untamed yet obedient element?What can stop the determined heart and resolved will of man?
上段中,其中一句"Why not still proceed over the untamed yet obedient element?"怎么翻译呀?我不懂这里yet该如何翻译……先谢谢各位朋友了!