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

Nature has planted in our minds an insatiable desire to seek the truth.

What one man can invent another can discover.

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

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

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.

True originality consists not in a new manner but in a new vision.

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

The unknown is the largest need of the intellect.

New things are always ugly.

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

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