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

The unknown is the largest need of the intellect.

I am tormented with an everlasting itch for things remote. I love to sail forbidden seas and land on barbarous coasts.

Science is a cemetery of dead ideas.

One sees great things from the valley; only small things from the peak.

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

What one man can invent another can discover.

They are ill discoverers that think there is no land, when they can see nothing but sea.

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

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