[cbruns]

Sounds like Three Body Problem. Not golden age though.

[abecedarius]

It's an Asimov story whose title I forget. The truth in question was a defense against nuclear bombs.

[HALtheWise]

Breeds There a Man...?

https://en.wikipedia.org/wiki/Breeds_There_a_Man...%3F

[Iwan-Zotow]

A&B Strugatsky wrote something similar

https://en.wikipedia.org/wiki/Definitely_Maybe_(novel)

[addaon]

That's it! Thanks!

Clearly left a mark on my memory.