Among all the portraits of Rembrandt, self portraits play an very important role. The large amount of his self portraits is the most among all the painters in history. According to incomplete statistics, the self portraits of Rembrandt stored in museums all over the world are around 90, 60 of them are oil painting, 20 of them are Copper Etching, 10 are pencil sketch self portrait. According to his later encounter and the fact of his selling off his property, probably other self portraits are missing in personal hands. There was a theorist calculating that every single year, Rembrandt would paint two self portraits. As a result, the total amount of Rembrandt's self portraits is over 100. His self portraits are not only numerous, but also higher quality as he grows older. Especially in the latter half of his life, the experience in real life makes him know much more about himself. Around the 60s, there are distinct personalities in his self portraits. Rembrand...