“The real question today is not when human life begins, but, What is the value of human life?”

"Einstein's Reply to Criticisms" (1949), The World As I See It (1949)
Context: What is the meaning of human life, or of organic life altogether? To answer this question at all implies a religion. Is there any sense then, you ask, in putting it? I answer, the man who regards his own life and that of his fellow creatures as meaningless is not merely unfortunate but almost disqualified for life.

1980s, First term of office (1981–1985), Abortion and the Conscience of the Nation (1983)

Source: The Power of Myth (book), p. 28
Context: Now, what is a myth? The dictionary definition of a myth would be stories about gods. So then you have to ask the next question: What is a god? A god is a personification of a motivating power or a value system that functions in human life and in the universe - the powers if your own body and of nature.

Designing the Future (2007)

Variant: Creativity — like human life itself — begins in darkness.
Source: The Artist's Way (1992)
Context: Creativity — like human life itself — begins in darkness. We need to acknowledge this. All too often, we think only in terms of light: "And then the lightbulb went on and I got it!" It is true that insights may come to us as flashes. It is true that some of these flashes may be blinding. It is, however, also true that such bright ideas are preceded by a gestation period that is interior, murky, and completely necessary.

Nobel lecture (2005)
Context: Consider also our approach to the sanctity and value of human life. In the aftermath of the September 2001 terrorist attacks in the United States, we all grieved deeply, and expressed outrage at this heinous crime — and rightly so. But many people today are unaware that, as the result of civil war in the Democratic Republic of the Congo, 3.8 million people have lost their lives since 1998.
Are we to conclude that our priorities are skewed, and our approaches uneven?

1960, Sport at the New Frontier: The Soft American
Context: It is ironic that at a time when the magnitude of our dangers makes the physical fitness of our citizens a matter of increasing importance, it takes greater effort and determination than ever before to build the strength of our bodies. The age of leisure and abundance can destroy vigor and muscle tone as effortlessly as it can gain time. Today human activity, the labor of the human body, is rapidly being engineered out of working life.

1980s, First term of office (1981–1985), Abortion and the Conscience of the Nation (1983)