In her letter to the Rebbe, a woman used the term ‘Orthodox Judaism.’

In his response, the Rebbe wrote:
“I must point out to you that splitting Judaism into ‘orthodox, conservative, and reform’ is a purely artificial division, for all Jews share one and the same Torah given by the One and same God. While there are more observant Jews and less observant ones, to tack on a label does not change the reality that we are all one.” (Excerpt from "Seeds of Wisdom")