Augustine, the Bishop of Hippo in his Confessions wrote of man’s basic need, the need to know God.
The heart of man is restless until it finds its rest in Thee.
Jesus explains His rest when he said:
All things have been handed over to me by my Father, and no one knows the Son except the Father, and no one knows the Father except the Son and anyone to whom the Son chooses to reveal him. Come to me, all who labor and are heavy laden, and I will give you rest. Take my yoke upon you, and learn from me, for I am gentle and lowly in heart, and you will find rest for your souls, (Matthew 11:27-29, ESV).
So often we try to find rest in other things, but often avoid the very One who can give us rest.