Lord, my heart is not haughty, nor mine eyes lofty: neither do I exercise myself in great matters, or in things too high for me. 2Surely I have behaved and quieted myself, as a child that is weaned of his mother: my soul is even as a weaned child. 3Let Israel hope in the LORD from henceforth and for ever.
Psalms
Psalms, chapter 131

In this chapter
A quiet soul
David's heart is not proud; he has calmed his soul like a weaned child with its mother.
King James Version. Public domain.