The Largest Mirror In The World, Salt Field, Bolivia

• Leonardo da Vinci called the mirror the "master of painters". He recommended, "When you wish to see whether your whole picture accords with what you have portrayed from nature take a mirror and reflect the actual object in it. Compare what is reflected with your painting and carefully consider whether both likenesses of the subject correspond, particularly in regard to the mirror."
• Many self-portraits are made possible through the use of mirrors:
- Without a mirror, the great self-portraits by Dürer, Frida Kahlo, Rembrandt, and Van Gogh could not have been painted.
- M. C. Escher used special shapes of mirrors in order to achieve a much more complete view of his surroundings than by direct observation in Hand with Reflecting Sphere (also known as Self-Portrait in Spherical Mirror).