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

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

How gloriously legible are the constellations of the heavens!

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

The atavistic urge toward danger persists and its satisfaction is called adventure.

There are truths that prove their discoverers witless.

What one man can invent another can discover.

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

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

What one man can invent another can discover.