This salutary multiplicative destruction had been a plank of Mondrian's theory almost from the beginning.

Keep the channel open.

There is a vitality, a life-force, an energy, a quickening that is translated through you into action, and because there is only one of you in all of time this expression is unique. and if you block it, it will never exist through any other medium and be lost. The world will not have it! It is not your business to determine how good it is nor how it compares with other expressions. It is your business to keep it yours clearly and directly, to keep the channel open.

Howard Roark would not approve

... Nor can those works which remind us of the poverty and meanness of our nature, be considered as of equal rank with what excites ideas of grandeur, or raises and dignifies humanity; or, in the words of a late poet, which makes the beholder learn to venerate himself as man.

... The internal fabric of our mind, as well as the external form of our bodies, being nearly uniform, it seems then to follow, of course, that as the imagination is incapable of producing anything originally of itself, and can only vary and combine these ideas with which it is furnished by means of the senses, there will be, of course, an agreement in the imaginations as in the senses of men.  There being this agreement, it follows that in all cases, in our lightest amusements as well as in our most serious actions and engagements of life, we must regulate our affections of every kind by that of others.  The well-disciplined mind acknowledges this authority, and submits its own opinion to the public voice.

... He therefore who is acquainted with the works which have pleased different ages and different countries, and has formed his opinion on them, has more materials and more means of knowing what is analogous to the mind of man than he who is conversant only with the works of his own age or country.  What has pleased, and continues to please, is likely to please again: hence are derived the rules of art, and on this immovable foundation they must ever stand.

Gnoli