People
It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow.
— Robert Hutchings Goddard
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Calling something impossible is risky, this says, because ideas change status over time. What is a dream yesterday becomes a hope today and may be plain reality tomorrow. It's an encouraging nudge to treat 'impossible' as a temporary label rather than a permanent verdict.
Context reviewed