“If babies held the same tendency toward self-criticism as adults, they might never learn to walk or talk. Can you imagine infants stomping, 'Aarggh! Screwed up again!' Fortunately, babies are free of self-criticism. They just keep practicing.”

Taste This

“The Crisis”.
Great Days (1979)

The First Year of Life of the Child (1927), "The Egocentrism of the Child and the Solipsism of the Baby", as translated by Howard E. Gruber and J. Jacques Vonèche
Context: There are no really solipsistic philosophers, and those who think they are deceive themselves. The true solipsist feels at one with the universe, and so very identical to it that he does not even feel the need for two terms. The true solipsist projects all his states of mind onto things. The true solipsist is entirely alone in the world, that is, he has no notion of anything exterior to himself. In other words the true solipsist has no idea of self. There is no self: there is the world. It is in this sense it is reasonable to call a baby a solipsist: the feelings and desires of a baby know no limits since they are a part of everything he sees, touches, and perceives.
Babies are, then, obviously narcissistic, but not in the way adults are, not even Spinoza's God, and I am a little afraid that Freud sometimes forgets that the narcissistic baby has no sense of self.
Given this definition of solipsism, egocentrism in children clearly appears to be a simple continuation of solipsism in infants.. Egocentrism, as we have seen, is not an intentional or even a conscious process. A child has no idea that he is egocentric. He believes everybody thinks the way he does, and this false universality is due simply to an absence of the sense of limits on his individuality. In this light, egocentrism and solipsism are quite comparable: both stem from the absence or the weakness of the sense of self.

Mark Hurd falls, could Larry Ellison and Steve Jobs be next? http://tgdaily.com/opinion/51025-mark-hurd-falls-could-larry-ellison-and-steve-jobs-be-next in TG Daily (10 August 2010)

Listen, Little Man! (1948)
Context: Every physician, shoemaker, mechanic or educator must know his shortcomings if he is to do his work and make his living. For some decades, you have begun to play a governing role on this earth. It is on your thinking and your actions that the future of humanity depends. But your teachers and masters do not tell you how you really think and are; nobody dares to voice the one criticism of you which could make you capable of governing your own fate. You are "free" only in one sense: free from education in governing your life yourself, free from self-criticism.

"On Freedom" in All Life is Problem Solving (1999)
Context: When I speak of reason or rationalism, all I mean is the conviction that we can learn through criticism of our mistakes and errors, especially through criticism by others, and eventually also through self-criticism. A rationalist is simply someone for whom it is more important to learn than to be proved right; someone who is willing to learn from others — not by simply taking over another's opinions, but by gladly allowing others to criticize his ideas and by gladly criticizing the ideas of others. The emphasis here is on the idea of criticism or, to be more precise, critical discussion. The genuine rationalist does not think that he or anyone else is in possession of the truth; nor does he think that mere criticism as such helps us achieve new ideas. But he does think that, in the sphere of ideas, only critical discussion can help us sort the wheat from the chaff. He is well aware that acceptance or rejection of an idea is never a purely rational matter; but he thinks that only critical discussion can give us the maturity to see an idea from more and more sides and to make a correct judgement of it.

In 1980, during his inspection tour in Tibet, as quoted in Southern Mongolia: Self-Determination Activist Tortured in Prison and Kept Under House Arrest https://unpo.org/article/19652?id=19652

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Kenneth Boulding (1958, p. 95) as cited in: Edward Stamp, Michael J. Mumford, Ken V. Peasnell (1993) Philosophical Perspectives on Accounting. p. 147
1950s