7
Seven
"There are seven cities, seven metals, seven days, and the number seven; seven letters, seven words in order meet, seven times, and as many places; seven herbs, seven arts, and seven stones. Divide seven by three, and thou shalt be wise. No one will then strive to precipitate the half. In brief, all will proceed favourably in this number."
— The Sophic Hydrolith, The Hermetic Museum, Vol. I, by Arthur Edward Waite, c. 1893