I once had the privilege of giving the keynote for a conference for coaches and consultants in London. While speaking with participants afterwards, someone took me to one side and asked with great sincerity if he was correct in noticing that I had been covertly introducing "spirituality" into my talk. I, of course, completely denied it. (Not the spirituality bit, just the idea that it had been in any way "covert.")
After reassuring me that he didn't mean it in a bad way and sharing how powerfully it had impacted him, he then asked me how I "got away with it," as he had found a lot of pushback from clients when he tried to introduce similar ideas in his talks and sessions.