Proverbs 18:11 Kabbalah

ה֣וֹן עָ֭שִׁיר קִרְיַ֣ת עֻזּ֑וֹ וּכְחוֹמָ֥ה נִ֝שְׂגָּבָ֗ה בְּמַשְׂכִּיתֽוֹ׃

The rich man’s wealth is his strong city, And as a high wall in his own conceit.

Read kabbalistic (mystical) interpretation of Proverbs 18:11: and classical mystical sources.