Quote Origin: I Don’t Think the Human Race Will Survive the Next Thousand Years, Unless We Spread Into Space

Stephen Hawking? Alvin Toffler? David Deutsch? Apocryphal? Question for Quote Investigator: Humankind currently inhabits only one small fragile planet, and the perils on Earth continue to grow. A prominent physicist once insisted that humankind must expand into space in order to survive the next thousand years. I am not sure of the exact phrasing. Would …

My Pencil and I Are More Clever Than I Am

Albert Einstein? Karl Popper? Adolf von Harnack? Agnes von Zahn-Harnack? Dorothy Kilgallen? Jules C. Stein? David Deutsch? Apocryphal? Question for Quote Investigator: Solving difficult problems often requires sketching out preliminary ideas on paper with a pen or pencil. The paper functions as an extension of human memory, and a scratchpad for developing thoughts. A famous …