“He who does not value life does not deserve it.”
The Notebooks of Leonardo Da Vinci (1938), I Philosophy
Help us to complete the source, original and additional information
Leonardo Da Vinci 363
Italian Renaissance polymath 1452–1519Related quotes
“He does not deserve your praise, but he deserves to be treated as if someday he might.”
#293
Vectors: Aphorisms and Ten Second Essays (2001)

“Who can not love, does not deserve prisoners.”
Original: (it) Chi non riesce ad amare, non merita prigionieri.
Source: prevale.net

“He who does not reflect his life back to God in gratitude does not know himself.”
Source: Reverence for Life: The Words of Albert Schweitzer

Speech to officer cadets at the Berlin Sportpalast, 18 December 1940. [Hitler: Speeches and Proclamations, 1932-1945 (English Volume III: 1939-1940), Domarus, Max, Max Domarus, Bolchazy-Carducci Publishers, 1997, 2162, 0865166277]
1940s

“We should not give away a moment to anyone who does not deserve it.”
Source: The Secret Life of Prince Charming
“Every person who is tempted to go astray, does not deserve punishment.”
Nahj al-Balagha

“The man who does not value himself, cannot value anything or anyone.”
Source: The Virtue of Selfishness: A New Concept of Egoism

The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.