Painting is concerned with all the ten attributes of sight, namely darkness and brightness, substance and colour, form and place, remoteness and near… - Leonardo da Vinci

Painting is concerned with all the 10 attributes of sight; which are: Darkness and Light, Solidity and Color, Form and Position, Distance and Propinquity, Motion and Rest.

Painting is concerned with all the 10 attributes of sight; which are: Darkness, Light, Solidity and Colour, Form and Position, Distance and Propinquity, Motion and Rest.

...the love of anything is the offspring of knowledge, love being more fervent in proportion as knowledge is more certain. And this certainty springs from a complete knowledge of all parts which united compose the whole of the thing which out to be loved.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

The smallest natural point is larger than all mathematical points, and this is proved because the natural point has continuity, and any thing that is continuous is infinitely divisible; but the mathematical point is indivisible because it has no size.