Translation of "томление" in English

И предал я сердце мое тому, чтобы познать мудрость и познать безумие и глупость: узнал, что и это — томление духа; потому что во многой мудрости много печали; и кто умножает познания, умножает скорбь.

- I applied my heart to know wisdom, and to know madness and folly. I perceived that this also was a chasing after wind. For in much wisdom is much grief; and he who increases knowledge increases sorrow.
- And I give my heart to know wisdom, and to know madness and folly: I have known that even this is vexation of spirit; for, in abundance of wisdom is abundance of sadness, and he who addeth knowledge addeth pain.