The significance of God, cause, number, substance or soul consists, as James asserts, in nothing but the tendency of the given concept to make us act or think. If the world should reach a point at which it ceases to care not only about such metaphysical entities but also about murders perpetrated behind closed frontiers or simply in the dark, one would have to conclude that the concepts of such murders have no meaning, that they represent no 'distinct ideas' or truths, since they do not make any 'sensible difference to anybody.

Once the philosophical foundation of democracy has collapsed, the statement that dictatorship is bad is rationally valid only for those who are not its beneficiaries, and there is no theoretical obstacle to the transformation of this statement into its opposite.

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.

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.

Now that science has helped us to overcome the awe of the unknown in nature, we are the slaves of social pressures of our own making. When called upon to act independently, we cry for patterns, systems, and authorities. If by enlightenment and intellectual progress we mean the freeing of man from superstitious belief in evil forces, in demons and fairies, in blind fate--in short, the emancipation from fear--then denunciation of what is currently called reason is the greatest service reason can render.

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.

As soon as a thought or word becomes a tool, one can dispense with actually 'thinking' it, that is, with going through the logical acts involved in verbal formulation of it. As has been pointed out, often and correctly, the advantage of mathematics - the model of all neo-positivistic thinking - lies in just this 'intellectual economy.' Complicated logical operations are carried out without actual performance of the intellectual acts upon which the mathematical and logical symbols are based. ... Reason ... becomes a fetish, a magic entity that is accepted rather than intellectually experienced.