"In Paris [Summer of 1881].. ..Lautrec found 'with wild joy' his [older] friend Princeteau. The affection linking the sixteen-year-old cripple to the deaf-mute of thirty-seven was stronger than ever. Their respective infirmities served to increase their friendship, They saw each other every day. Lautrec called Princeteau his 'master'; Princeteau called Lautrec his 'studio foster-child.' Indeed, Lautrec imitated him 'like a monkey.' He copied his methods, his brushwork and his technique which had both solidity and fluency and was much concerned with the management of light."
January 1, 1970
https://en.wikiquote.org/wiki/Henri_de_Toulouse-Lautrec