There is no favourable wind for those who do not know their port.这句话有什么深刻的含义吗?

there is no point No longer is there There is no way. there is no way there is no There Is No There is no there is no silver there is no wait there is no evidence If there is no there is no 和 there is not Where there is no trust there is no love . Because there is no because,so there is no so. There is no dream ,no tomorrow there is no one at where there is no water ,there is no life_____ is no water ,there is no lifewhy use where there? there is no chance是什么意思