Mortimer J. Adler said this quote

The complexities of adult life get in the way of the truth. The great philosophers have always been able to clear away the complexities and see simple distinctions - simple once they are stated, vastly difficult before. If we are to follow them we too must be childishly simple in our questions - and maturely wise in our replies.

~ Mortimer J. Adler

Is it too much to expect from the schools that they train their students not only to interpret but to criticize; that is, to discriminate what is sound from error and falsehood, to suspend judgement if they are not convinced, or to judge with reason if they agree or disagree?

~ Mortimer J. Adler

Wonder is the beginning of wisdom in learning from books as well as from nature.

~ Mortimer J. Adler

There are genuine mysteries in the world that mark the limits of human knowing and thinking. Wisdom is fortified, not destroyed, by understanding its limitations. Ignorance does not make a fool as surely as self-deception.

~ Mortimer J. Adler