F*** You: Mr. President.

That was the title of the memoir left by scientist Samuel T. Cohen. The asterisks are his.

So why was Cohen so angry? It's because the US government didn't want to use his invention.

The neutron bomb.

You see, Cohen came up with a more humane alternative to the atomic bomb. His invention, which he called "the most sane and moral weapon ever devised", would be much less destructive than the other option. It would not damage buildings. There would be no radiation left behind. Oh, sure, everyone in a one-mile radius would be dead, but this is a weapon, not a children's toy!

So which president was Cohen's vitriol addressed at? Would you believe... most of them? Not fewer than six rejected his creation; Ronald Reagan was the only one to acquiesce, building up a small arsenal that George Bush The Elder soon destroyed.

Cohen spent most of his life trying to fight for his invention. He passed away in 2010, leaving behind the aforementioned memoir, where he rambled on about the injustice.

Moral? Maybe. Sane? Well...