The rehabilitation of order as a universal principle, however, suggested at the same time that orderliness by itself is not sufficient to account for the nature of organized systems in general or for those created by man in particular.

Variety is more than a means of avoiding boredom, since art is more than an entertainment of the senses.

As one gets older, it happens that in the morning one fails to remember the airplane trip to be taken in a few hours or the lecture scheduled for the afternoon.

The fundamental peculiarity of the photographic medium; the physical objects themselves print their image by means of the optical and chemical action of light.

The line that describes the beautiful is elliptical. It has simplicity and constant change. It cannot be described by a compass, and it changes direction at every one of its points.

Climbing is a heroic liberating act; and height spontaneously symbolizes things of high value, be it in the value of worldly power or of spirituality. To rise in an elevator, balloon, or airplane is to experience being liberated from weight, sublimated, invested with superhuman abilities. In addition, to rise from the earth is to approach the realm of light and overview. Therefore the negative overcoming of weight is at the same time the positive achievement of enlightenment and an unobstructed outlook.

Once it is recognized that productive thinking in any area of cognition is perceptual thinking, the central function of art in general education will become evident.