Rebbetzin Sara-Tova Yaffe, of the CBD Chabad Sydney, in Sydney, Australia, takes us through each of the 7 sefirot, and explains them in detail.

But that don’t cover the range of our feelings. We need more dimensions for our diagram. Like Ptolemy’s cosmos, sphere within sphere, it’s so over-wrought it’s bound to break down.

Hava Tirosh-Rothschild, Sefirot as the Essence of God in the Writings of David Messer Leon, AJS Review, Vol. 7/8 (1982/1983), pp. 409-425 ...

The first three Sefirot, Chochma, Binah and Daas, represent the mind. The middle three, Chessed, Gevurah and Tiferet, represent the inner emotions.