A cloud can look like a ...

A cloud can look like a camel, but a camel is unlikely to look like a cloud. This is so because the signifier must be able to stand for the whole category of the signified. The cloud looks like all camels, but no camel looks like all clouds.
 See image
 Rudolf Arnheim

Quotes from the same author

All perceiving is also thinking, all reasoning is also intuition, all observation is also invention.
 See image
 Rudolf Arnheim
Rather than be asked to abandon one's own heritage and to adapt to the mores of the new country, one was expected to possess a treasure of foreign skills and customs that would enrich the resources of American living.
 See image
 Rudolf Arnheim
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.
 See image
 Rudolf Arnheim
Orderliness by itself is not sufficient to account for the nature of organized systems in general or for those created by man in particular. Mere orderliness leads to increasing impoverishment and finally to the lowest possible level of structure, no longer clearly distinguishable from chaos, which is the absence of order. A counterprinciple is needed, to which orderliness is secondary. It must supply what is to be ordered.
 See image
 Rudolf Arnheim
Just as a chemist "isolates" a substance from contaminations that distort his view of its nature and effects, so the work of art purifies significant appearance. It presents abstract themes in their generality, but not reduced to diagrams.
 See image
 Rudolf Arnheim