Artist state a lot of things Gerhard Richter’s statements are about not knowing things.

Gerhard Richter is wary of all ideologies and of all exclusive claims on the truth. Having grown up under two totalitarian regimes, first in Nazi Germany and secondly in communist East Germany, he has every cause to be mistrustful of people and causes that ‘have the answer’. This scepticism extends to Richter’s views on art as well as to his general philosophy. Asking himself the age-old question ‘What can I know about the world?’, he comes to the conclusion, ‘Only what my senses tell me. But that doesn’t mean I know anything about the real world, about objects in themselves’.

https://mapmagazine.co.uk/gerhard-richter-radical-sense

I pursue no objectives, no system, no tendency;I have no programme, no style, no direction.I have no time for specialised concerns, working themes, or variations that lead to mastery. I steer clear of definitions. I don’t know what I want. I am inconsistent, non-committal, passive; I like the indefinite, the boundless; I like continual uncertainty.

GHR 1966