Authors:

To know the laws that govern the winds, and to know that you know them, will give you an easy mind on your voyage round the world; otherwise you may tremble at the appearance of every cloud.

Joshua Slocum, Applewood Books (CRT) (2006). “Sailing Alone Around the World”, p.146, Applewood Books
To know the laws that govern the winds, and to know that you know them, will give you an easy mind on your voyage round the world; otherwise you may tremble at the appearance of every cloud.