Leonardo DaVinci 1452-1519, is widely considered to be one of the greatest painters of all time, and perhaps the most diversely talented person ever to have lived.
“Thus I say to you whom nature prompts to pursue this art, if you wish to have a sound knowledge of the forms of objects begin with the details of them.”
“Do not go on to the next step till you have the first well fixed in memory and in practice.”
“And if you do otherwise you will throw away your time, or certainly greatly prolong your studies.”
“And remember to acquire diligence rather than rapidity.”