Leonardo compares the end of a productive day with the end of a well-used life. Just as purposeful activity can make rest feel natural and satisfying, he suggests that a life spent meaningfully may make death easier to face. The comparison links contentment at life’s end with how a person has used the time available to them.

The statement places emphasis on conduct and fulfilment rather than on death itself. A “well used” life can be understood as one devoted to worthwhile activity, learning, relationships or responsibilities according to a person’s circumstances and values. The implication is that peace at the end of life is connected to a sense that one’s time has not been wasted.

The quote can therefore serve as a reflection on mortality and everyday priorities. It presents death as part of the broader course of life and encourages attention to how present choices contribute to eventual satisfaction with the life one has led.

Alternative translation

“As a day well spent procures a happy sleep, so a life well employed procures a happy death.”