At The Time Quotes (1 quote)
One of my teachers in the Vienna Psychoanalytic Institute in the late twenties was Dr. Paul Federn…. At the time, his concept of “ego boundaries” was much discussed as important but opaque. We students, in some desperation, asked him…to explain it to us…and on concluding…he folded up his papers with the air of one who has finally made himself understood, and asked: “Nun—hab ich mich verstanden?” (“Now—have I understood myself?”).
I have asked myself this question more than once in rereading what I have written on identity.
In Identity: Youth and Crisis (1968), 9.

In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) --
Carl Sagan
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