Idea of Einstein Icon
This looks like Einstein's beautiful face. He has a big mustache, two dots representing his eyes, and lines above his eyes indicating his eyebrows. He has very, very crazy hair. He doesn't look happy.
This Einstein icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.