We need to wake up from a thought that lasts too long.
A man is a poet if difficulties inherent in his art provide him with ideas; he is not a poet if they deprive him of ideas.
The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.
A difficulty is a light. An insurmountable difficulty is a sun.
The future, like everything else, is no longer quite what it used to be.
Every beginning is a consequence - every beginning ends some thing.