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Time & hindsight

If you could put a message on a giant billboard, what would it say and why?

25 answers answered between 1944 and 2026

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On the record

Public figures who have answered a question like this elsewhere. Quoted from the source shown, not written for FLAPSS.

Read by field Everyone Science and medicine 4 Politics and public life 12 Business and finance 3 Sport 4
Read by age Any age Before thirty 3 In their thirties 3 In their forties 2 In their fifties 3 In their sixties 8 Seventy and beyond 4
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Richard Feynman Theoretical physicist; Nobel laureate in Physics, 1965
The first principle is that you must not fool yourself—and you are the easiest person to fool. So you have to be very careful about that. After you've not fooled yourself, it's easy not to fool other scientists. You just have to be honest in a conventional way after that.
Recorded Caltech commencement address, Pasadena, California, Caltech Engineering and Science (Caltech Library archive), 1 June 1974 source ↗
Peter Doherty Veterinary surgeon and immunologist; Nobel laureate in Physiology or Medicine, 1996
I share Alfred Nobel's conviction that war is the greatest of all human disasters. Infectious disease runs a good second.
Recorded Laureate-written autobiography for Les Prix Nobel, Nobel Prize Outreach, 1 December 1996 source ↗
Ahmed Zewail Chemist; Nobel laureate in Chemistry, 1999
At the age of 21, as a Moeid, I believed that behind every universal phenomenon there must be beauty and simplicity in its description. This belief remains true today.
Recorded Laureate-written autobiography for Les Prix Nobel, Nobel Prize Outreach, 1 December 1999 source ↗

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