Dutch artist Rembrandt painted over 80 pictures of himself in his lifetime. This self portrait is one of his last, painted when he was 63, not long before he died in 1669.
It is an honest self-examination that captures the textures and colours of his ageing face.
French artist Paul Cézanne was about 40-years-old when he painted this self portrait around 1880-1.
He has a distant, reflective presence, staring at us calmly and without expression.
If you zoom into the painting, you can see how he uses parallel lines of brushstrokes to build up layers of skin tone.
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