In most cases, to be reasonable means not to be obstinate, which in turn points to conformity with reality as it is. The principle of adjustment is taken for granted. When the idea of reason was conceived, it was intended to achieve more than the mere regulation of the relation between means and ends: it was regarded as the instrument for understanding the ends, for determining them.

The world is so possessed by the power of what is and the efforts of adjustment to it, that the adolescent's rebellion, which once fought the father because his practices contradicted his own ideology, can no longer crop up. ... Psychologically, the father is ... replaced by the world of things.

The facts which our senses present to us are socially performed in two ways: through the historical character of the object perceived and through the historical character of the perceiving organ. Both are not simply natural; they are shaped by human activity, and yet the individual perceives himself as receptive and passive in the act of perception.

A revolutionary career does not lead to banquets and honorary titles, interesting research and professorial wages. It leads to misery, disgrace, ingratitude, prison and a voyage into the unknown, illuminated by only an almost superhuman belief.

When the great religious and philosophical conceptions were alive, thinking people did not extol humility and brotherly love, justice and humanity because it was realistic to maintain such principles and odd and dangerous to deviate from them, or because these maxims were more in harmony with their supposedly free tastes than others. They held to such ideas because they saw in them elements of truth, because they connected them with the idea of logos, whether in the form of God or of a transcendental mind, or even of nature as an eternal principle.

In most cases, to be reasonable means not to be obstinate, which in turn points to conformity with reality as it is. The principle of adjustment is taken for granted. When the idea of reason was conceived, it was intended to achieve more than the mere regulation of the relation between means and ends: it was regarded as the instrument for understanding the ends, for determining them.

The pleasure a man gets from a landscape would [not] last long if he were convinced a priori that the forms and colors he sees are just forms and colors, that all structures in which they play a role are purely subjective and have no relation whatsoever to any meaningful order or totality, that they simply and necessarily express nothing....No walk through the landscape is necessary any longer; and thus the very concept of landscape as experienced by a pedestrian becomes meaningless and arbitrary. Landscape deteriorates altogether into landscaping.