•Scepticism and pessimism aren’t synonymous. Scepticism calls for pessimism when optimism is excessive. But it also calls for optimism when pessimism… - Howard Marks

It's worth noting that the assumption that something can't happen has the potential to make it happen, since people who believe it can't happen will engage in risky behaviour, and thus alter the environment.

A high-quality asset can constitute a good or bad buy, and a low-quality asset can constitute a good or bad buy. The tendency to mistake objective merit for investment opportunity, and the failure to distinguish between good assets and good buys, get most investors in trouble.

Forgetfulness is the catalytic germ of spontaneous creativity