The secret of joy is the ...

The secret of joy is the mastery of pain.
The secret of joy is the mastery of pain.

Quotes from the same author

Age does not protect you from love. But love, to some extent, protects you from age.
The dream was always running ahead of me. To catch up, to live for a moment in unison with it, that was the miracle.
The possession of knowledge does not kill the sense of wonder and mystery. There is always more mystery.
The personal life deeply lived always expands into truths beyond itself.
Dreams pass into the reality of action. From the actions stems the dream again; and this interdependence produces the highest form of living.