Clichés, stock phrases, adherence to conventional, standardized codes of expression and conduct have the socially recognized function of protecting us against reality, that is, against the claim on our thinking attention that all events and facts make by virtue of their existence.

Thinking, existentially speaking, is a solitary but not a lonely business; solitude is that human situation in which I keep myself company. Loneliness comes about when I am alone without being able to split up into the two-in-one, without being able to keep myself company.

A life without thinking is quite possible; it then fails to develop its own essence – it is not merely meaningless; it is not fully alive. Unthinking men are like sleepwalkers

every thought that deviates from the officially prescribed and permanently changing line is already suspect, no matter in which field of human activity it occurs. Simply because of their capacity to think, human beings are suspects by definition, and this suspicion cannot be diverted by exemplary behavior, for the human capacity to think is also a capacity to change one's mind.

Kant ... was also quite aware that "the urgent need" of reason is both different from and "more than mere quest and desire for knowledge." Hence, the distinguishing of the two faculties, reason and intellect, coincides with a distinction between two altogether different mental activities, thinking and knowing.

Thinking withdraws radically and for its own sake from this world and its evidential nature, whereas science profits from a possible withdrawal for the sake of specific results.

You think that you can judge what's good or evil from whether you enjoy doing it or not. You think that evil is what always appears in the form of a temptation, while good is what you never spontaneously want to do. I think this is all total rubbish, if you don't mind my saying so.

Kant ... discovered "the scandal of reason," that is the fact that our mind is not capable of certain and verifiable knowledge regarding matters and questions that it nevertheless cannot help thinking about.

What I propose, therefore, is very simple: it is nothing more than to think what we are doing