Belief is the end of Observation
What you do is you have an idea, and you hold it in your mind as long as it’s useful. And then when it turns out not to be useful, discard it. But the idea of clinging to belief as a basis for your life – which is what most people do – is terrifying, because belief is the end of observation. You believe something, you stop seeing everything else. Clearly, that is not desirable. And yet it’s the way most people live.
— Milton Glaser, 27 Jun 2020
From the interview Design is Not Appearance: My Interview with Milton Glaser