Events and developments, such as ... the Copernican Revolution, ... occurred only because some thinkers either decided not to be bound by certain "obvious" methodological rules, or because they unwittingly broke them.

Humane science must be adapted to the requirements of a balanced and rewarding life.

Ultimate Reality, if such an entity can be postulated, is ineffable.

The material which a scientist actually has at his disposal, his laws, his experimental results, his mathematical techniques, his epistemological prejudices, his attitude towards the absurd consequences of the theories which he accepts, is indeterminate in many ways, ambiguous, and never fully separated from the historical background . This material is always contaminated by principles which he does not know and which, if known, would be extremely hard to test.

I had studied Dadaism after the Second World War. What attracted me to this movement was the style its inventors used when not engaged in Dadaistic activities. It was clear, luminous, simple without being banal, precise without being narrow; it was a style adapted to the expression of thought as well as of emotion. I connected this style with the Dadaistic exercises themselves

There is no coherent knowledge , i.e. no uniform comprehensive account of the world and the events in it. There is no comprehensive truth that goes beyond an enumeration of details, but there are many pieces of information , obtained in different ways from different sources and collected for the benefit of the curious. The best way of presenting such knowledge is the list - and the oldest scientific works were indeed lists of facts, parts, coincidences, problems in several specialized domains.

Given any rule, however �fundamental� or �necessary� for science, there are always circumstances when it is advisable not only to ignore the rule, but to adopt its opposite.