This work is representing the concept of quantum mechanics. I studied theoretical physics in my graduate student days of Ph. D. course. Since those days, I often used graphical images to tell other guys the concepts of physics. My skill to express complex concepts with the help of graphical representations is trained in such a way. This work has two equations. One is the Schrödinger equation at the center, and the other is the commutation relation at the low right. These are fundamental and particularly important equations that appear when learning quantum mechanics. The lower-left image is square well potential, and the upper-right is the energy level of harmonic oscillator. These are important examples of the basics of quantum mechanics.