"Those who make their dress a principal part of themselves, will, in general, become of no more value than their dress"

This quote by William Hazlitt is a caution versus vanity and materialism. He is recommending that those who position excessive focus on their physical appearance and material possessions will become shallow and shallow. He is implying that if someone is too focused on their outside look, they will not have the ability to establish their inner qualities and will end up being no more valuable than the clothes they use. Hazlitt is suggesting that individuals need to focus on developing their inner qualities and character rather than their outside look. He is emphasizing the importance of developing one's inner self and not counting on product belongings to define one's worth. He is cautioning against the threats of vanity and materialism, and motivating people to concentrate on establishing their inner qualities.