“ Human propensities for self-betterment, envy, and competition will always be throbbing subsurface ”
Carl Sagan, Pale Blue Dot (1994). copy citation
| Author | Carl Sagan |
|---|---|
| Source | Pale Blue Dot |
| Topic | competition envy |
| Date | 1994 |
| Language | English |
| Reference | |
| Note | |
| Weblink |
