“The Maharal tells us that the design of the hei is comprised of a dalet and a yud.
The dalet is composed of one horizontal line (signifying width) and another that is vertical (signifying height), which together represent the physical world, the world of materialism.
The yud (the detached left leg) represents G-d, and thus spirituality.
The Maharal teaches us that just as the dalet and the yud come together to form the hei, so, too, one has an obligation to imbue and sanctify the physical world with spirituality and G-dliness.”