"God has, in fact, written two books, not just one. Of course, we are all familiar with the first book he wrote, namely Scripture. But he has written a second book called creation."
"Hope is a good breakfast, but it is a bad supper."
"Wonder is the seed of knowledge"
"Begin doing what you want to do now. We are not living in eternity. We have only this moment, sparkling like a star in our hand--and melting like a snowflake..."
"If in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundations of knowledge in mathematics."
"Imagination was given to man to compensate him for what he is not; a sense of humor to console him for what he is."