The discovery of a new dish does more for human happiness than the discovery of a star.

A man of genius makes no mistakes. His errors are volitional and are the portals of discovery.

How gloriously legible are the constellations of the heavens!

When they shout “Long live progress,” always ask, “Progress of what?”

Appearances are a glimpse of the obscure.

Research is formalized curiosity. It is poking and prying with a purpose. 

I learned to make my mind large, as the universe is large, so that there is room for paradoxes.

Every man takes the limits of his own field of vision for the limits of the world.

The unknown is the largest need of the intellect.

What one man can invent another can discover.