What one man can invent another can discover.

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

The unknown is the largest need of the intellect.

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

Science is a cemetery of dead ideas.

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

What one man can invent another can discover.

The eternal mystery of the world is its comprehensibility.

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

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

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

Most new discoveries are suddenly-seen things that were always there.

One doesn’t discover new lands without consenting to lose sight of the shore for a very long time.