quote · Legacy record
The instinct to survive is human nature itself, and every aspect of our personalities derives from it. Anything that conflicts with the survival instinct acts sooner or later to eliminate the individual and thereby fails to show up in future generations. . . . A scientifically verifiable theory of morals must be rooted in the individual's instinct to survive--and nowhere else!--and must correctly describe the hierarchy of survival, note the motivations at each level, and resolve all conflicts.We have such a theory now; we can solve any moral problem, on any level. Self-interest, love of family, duty to country, responsibility toward the human race . . . .The basis of all morality is duty, a concept with the same relation to group that self-interest has to individual.
The instinct to survive is human nature itself, and every aspect of our personalities derives from it. Anything that conflicts with the survival instinct acts sooner or later to eliminate the individual and thereby fails to show up in future generations. . . . A scientifically verifiable theory of morals must be rooted in the individual's instinct to survive--and nowhere else!--and must correctly describe the hierarchy of survival, note the motivations at each level, and resolve all conflicts.We have such a theory now; we can solve any moral problem, on any level. Self-interest, love of family, duty to country, responsibility toward the human race . . . .The basis of all morality is duty, a concept with the same relation to group that self-interest has to individual.
Approximate author period: c. 1947 AD · modern
Meaning not yet available
An individual explanation has not yet been added. We do not substitute a generic description for an interpretation of these particular words.
Begin with source-checked readings and explanations ↗Attribution & collection notes
- Author or tradition
- Robert A. Heinlein
Attribution: attributed - Country attributed
- Not established
A country attribution does not establish the earliest origin. - Historical period
- Approximate author period: c. 1947 AD · modern
Approximate author-period anchor from life dates 1907 to 1988; Wikidata Q123078, https://www.wikidata.org/wiki/Q123078 (accessed 2026-10-08). Not a quotation composition date.
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken. - Recorded source
- Contributor-provided quotation collection
Supplied reference C; CSV row 246265; supplied attribution, independently unverified
A collection's publication date can be later than the words it records.