They walk with speed who walk alone

They walk with speed who walk alone. Meaning and/or origin please.

It's a slightly garbled quotation from a poem by Rudyand Kipling: "Down to Gehenna or up the the Throne/He travels the fastest who travels alone."
Roughly speaking Kipling meant that whatever your aims are in life, whether those aims are noble or base, you will achieve them fastest if you keep free of emotional ties.