Franz Kafka:
Anyone who keeps the ability to see beauty never grows old.
Evil is whatever distracts.
Productivity is being able to do things that you were never able to do before.
A book should serve as the ax for the frozen sea within us.
You can hold yourself back from the sufferings of the world, that is something you are free to do and it accords with your nature, but perhaps this very holding back is the one suffering you could avoid.