From page 101 of the book, The Man Called the Siri Singh Sahib, published in 1979 and written by S. Sopurkh Singh Khalsa, Los Angeles, CA, USA

It is the God in him, the spirit that moves him, which is great.  The Siri Singh Sahib is just a simple man, a humble man, a man practicing righteousness, a man who is worthy of that spirit.  His vision is grace.  His vision is innocence, his vision is Truth.  His vision is maintaining these at all costs.