Sherab Chodzin Kohn, The Awakened One: A Life of the Buddha (Shambhala Dragon Editions) (Boston: Shambhala, 2000).
If you can find a trustworthy companion
With whom to walk, both virtuous and steadfast,
Then walk with him content and mindfully....
If you can find no trustworthy companion...
Then as a king who leaves a vanquished kingdom,
Walk like a tusker [bull elephant] in the woods alone.
Better it is to walk alone:
There is no fellowship with fools.
Walk alone, harm none, and know no conflict;
Be like a tusker in the woods alone.
Id. at 92 (citations omitted).