Piet Mondrian

It took me a long time to discover that particularities of form and natural colour evoke subjective states of feeling which obscure pure reality. The appearance of natural forms changes, but reality remains. To create pure reality plasticity, it is necessary to reduce natural forms to constant elements of form, and natural colour to primary colour. The aim is not to create other particular forms and colours, with all their limitations, but to work toward abolishing them in the interest of a larger unity.

The truly modern artist is aware of abstraction in an emotion of beauty; he is conscious of the fact that the emotion of beauty is cosmic, universal. This conscious recognition has for its corollary an abstract plasticism, for man adheres only to what is universal.

It was during this early period of experiment that I first went to Paris. The time was around 1910 when Cubism was in its beginnings. I admired Matisse, Van Dongen and the other Fauves, but I was immediately drawn to the Cubists, especially to Picasso and Léger. Of all the abstractionists (Kandinsky and the Futurists) I felt that only the Cubists had discovered the right path; and, for a time, I was much influenced by them.

For the present at least I shall restrict my work to the ordinary world of the senses, since that is the world in which we still live. But nevertheless art even now form a transition to the finer regions, which perhaps I am incorrect in calling spiritual, for everything that has form is not yet spiritual, as I read somewhere. But it is nonetheless the path of ascension away from matter. Well dear Querido, with many heartfelt wishes, Piet Mondriaan.

The cultivated man of today is gradually turning away from natural things, and his life is becoming more and more abstract. Natural (external) things become more and more automatic, and we observe that our vital attention fastens more and more on internal things.

The surface of things gives enjoyment, their interiority gives life.

[the double line in his paintings] is still one line, as in the case of your grooves [= the wide sunken lines in the relief's, the artist Gorin made then].. .In my last things the double line widens to form a plane, and yet it remains a line. Be that as it may, I believe that this question is one of those which lie beyond the realm of theory, and which are of such subtlety that they are rooted in the mystery of 'art'. But all that is not yet clear in my mind.

I believe that it is possible by means of horizontal and vertical lines, constructed 'consciously' but not 'calculating', guided by a higher intuition and brought to harmony and rhythm – I believe that these fundamental aesthetic shapes – where necessary supplemented by lines in other directions or curved lines, make it possible to arrive at a work of art which is as strong as it is true. For anyone who sees more deeply, there is nothing vague about this; it is only vague for the superficial observer of nature. And 'chance' must be as far removed as 'calculation'. And for the rest it seems to me that it is necessary to keep breaking off the horizontal or vertical line: for if these directions were not countered by others, they would themselves come to signify something 'specific' and thus human.

Forgive me of saying so, but good things just have to grow very slowly. I say this in connection with your [Doesburg's] plans.. ..for launching a journal [ De Stijl. I do not think that the time is favourable for it. More must be achieved in art in that direction. I hardly know anyone who is really creating art in our style, in other words, art which has arrived.. ..(i.e. you will have to include in it [in the planned art-Journal '[[w:De Stijl|De Stijl'] what is not consistent with our ideas.)

[..how the] landlord has had my room cleaned by Snow White and the squirrel has whitewashed the walls with his tail [signed:] - "Sleepy".

Kandinsky points out [in his book On the Spiritual in Art] that Theosophy (in its true sense; not as it generally appears) is yet another expression of the same spiritual movement which we are now seeing in painting.

The rhythm of relations of color and size makes the absolute appear in the relativity of time and space.

In Paris, I quickly mastered the Foxtrot, the Shimmy and the One Step, [he liked the Shimmy best:] At first, the heel-toe was sort of tricky. Nowadays, they find ways around it.

We arrive at a portrayal of other things, such as the laws governing matter. These are the great generalities – Which do not change.

The first thing to change in my painting was the color [c. 1908-09]. I forsook natural color for pure color. I had come to feel that the colors of nature cannot be reproduced on canvas. Instinctively I felt that painting had to find a new way to express the beauty of nature.