The world around us is created up of lines and is constantly expanding and producing images and objects. Often, a doodle or a drawing represents the initial impulse of the creative process. Major scientific breakthroughs, the first medical experiment, or the first depiction of the human body all began as lines, sketches, and pieces of paper. We must acknowledge the reality that storytelling, which is so crucial to human existence, has always been represented through images and its ageless language. The earliest pencil sketches made by a human hand, the cave-man paintings, were utilised for enjoyment in a sense as well as for rituals.

Drawings have predominated throughout art history as a means of better understanding the world in which we live. Drawings by Leonardo Da Vinci, one of the most important Renaissance artists, anticipated modern scientific and technological advancements. The Vitruvian Man, one of his most well-known sketches, is a study of the human body's proportions that unites art and science in a single piece that has come to symbolise Renaissance humanism. Da Vinci was renowned for following individuals, observing them, and sketching their faces if he thought they were intriguing. Da Vinci, who is best known for his paintings, was also a genius at sketching and kept numerous journals with his preparations, experiments, and anatomical diagrams.