“In spite of all the bonds uniting the individual soul either with a higher source or with every other soul, each particular spark, each individual soul, is unique and special, in terms of its essence, its capacity, and what is demanded of it.
No two souls coincide in their actions, their functions, and their paths.
No one soul can take the place of another, and even the greatest of the great cannot fill the special role, the particular place, of another that may be the smallest of the small.”
–Rabbi Adin Steinsaltz
From The Thirteen Petalled Rose, pp. 38, by Rabbi Adin Steinsaltz