What are the motifs in Comics and Sequential Art by Will Eisner?

Time is a recurring idea in the book. Humans being exist in space and time. Depicting space graphically is far easier than illusory time. When the comic book artist depicts time, s/he can either show a series of frames, each containing an immediate results (like one figure stabbing threatening another, being shot by that other figure, and dropping dead) or arranging illusions and symbols to stretch time and enhance emotion - capturing the original assailant's staggering last moments, for instance.