G‑d has endowed the Jewish people with Divine souls tailored to their Divine mission. In order to maintain the health of these unique souls, the Jewish people are required to follow a special diet: the laws of Kashrut.
Cloven Feet
כֹּל מַפְרֶסֶת פַּרְסָה וְשֹׁסַעַת שֶׁסַע פְּרָסֹת וגו': (ויקרא יא:ג)
[G‑d instructed Moses to tell the Jewish people, “You may only eat animals] whose feet are [not only partially] cloven but completely split into [at least two sub-]feet.” Leviticus 11:3

The first sign of a kosher animal is its split foot. The foot both touches the ground and separates us from the ground. It therefore alludes to the notion that in our involvement with the physical world, we must remain separate from it, aloof in our dealings with materiality. The fact that the foot must be split alludes to the notion that there must be an opening in this barrier: We must make sure that the light of holiness permeates even the most mundane aspects of creation, and make sure to retain Divine consciousness even when we are involved in the mundane aspects of our lives.

The other sign of kosher land animals is rumination. This alludes to the necessity of deliberating before engaging the mundane aspects of life. First, we must weigh our intentions, ensuring that they are solely toward elevating the world, purging them of any desire to simply indulge in sensuality for its own sake. Second, we must weigh the methods we employ in elevating the world, ensuring that they conform to the guidelines set forth in the Torah.1