כְּאַיָּ֗ל תַּעֲרֹ֥ג עַל־אֲפִֽיקֵי־מָ֑יִם כֵּ֤ן נַפְשִׁ֨י תַעֲרֹ֖ג אֵלֶ֣יךָ אֱלֹהִֽים׃
As the hart panteth after the water brooks, so panteth my soul after Thee, O God.
Read Jewish philosophical commentary on Psalms 42:2: and classical philosophical sources.