That's probably not an African proverb

The following is a brochure marketing an event by Jeff Allen and uses the translated quote:

“If you want to go quickly, go alone. If you want to go far, go together.”

http://parisevents.de/wp-content/uploads/2017/11/WEB_low_Folder_Jeff-Leipzig_Mai-2018.pdf
[Update Apr. 1, 2020: Dead link]

A tour through any Psychology of Vision-related Facebook page reveals that the overuse of refrigerator magnet sayings combined with New Age clipart imagery rather than creating original material is commonplace. Jia Tolentino of Jezebel in her article On the Origin of Certain Quotable 'African Proverbs' concluded:

"That's probably not an African proverb."

https://jezebel.com/on-the-origin-of-certain-quotable-african-proverbs-1766664089

Jeff Allen, who the Spezzanos themselves said they "groomed," was indeed a former POV trainer of the highest rank. The glowing praise for and from the POV cult in this brochure demonstrates that Allen's organizations remain sort of subservient subsidiaries to the Spezzano's for-profit corporation.