Rare as is true love, true friendship is rarer.
Great men are rare, poets are rarer, but the great man who is a poet, transfiguring his greatness, is the rarest of all events.
Moral courage is higher and a rarer virtue than physical courage.
The gritty indie films are a lot rarer than the films that aspire to fill multiplexes.
In my experience, it is rarer to find a really happy person in a circle of millionaires than among vagabonds.