Des petits mots

"A man without a woman is not an Adam. For it is written (Genesis 5:2),  "Male and female He created them... and He called their name Adam."
Rabbi  Eliezer ben Hyrkanus (quoted in the Talmud, Yevamot 63a)

"As they set out from their place above, each soul is male and female as one. Only as they descend to this world do they part, each to its own side. And then it is the One Above who unites them again. This is His exclusive domain, for He alone knows which soul belongs to which and how they must reunite."

Rabbi Shimon bar Yochai (2nd century CE)
(Zohar, Book I, 85b)

"There is another issue about which you must take great care, and that is to ensure that the Shechinah be always with you and never part from you. Now, before a man is married, obviously the Shechinah is not with him at all, since the principal element that draws the Shechinah to a person is the feminine element. In fact, each man stands between two females: The corporeal woman below to whom he must provide food, clothing and affection. And the Shechinah which stands over him to bless him with all these things so that he may turn around and provide them to the woman of his covenant."Rabbi Moshe Cordovero (1522?-1570)

"A king without a queen, the Zohar says, is neither great nor a king. For it is the woman who empowers the man to conquer his space.

And it is the man who empowers the woman to penetrate and nurture hers. 

And then the man will learn from this woman that he, too, can reach within others and provide nurture. And the woman will learn that she, too, can conquer."Rabbi Menachem Mendel Shcneerson (from a talk, Shabbat Parshat Noah, 1991)