So my mind was turned to grief for all the trouble I had taken and all my wisdom under the sun.

Sorrow is better than joy; when the face is sad the mind gets better.

I gave my mind to knowledge and to searching for wisdom and the reason of things, and to the discovery that sin is foolish, and that to be foolish is to be without one's senses.

When I gave my mind to the knowledge of wisdom and to seeing the business which is done on the earth (and there are those whose eyes see not sleep by day or by night),

But even if a man's life is long and he has joy in all his years, let him keep in mind the dark days, because they will be great in number. Whatever may come is to no purpose.

Let your mind be turned to your Maker in the days of your strength, while the evil days come not, and the years are far away when you will say, I have no pleasure in them;