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 unknown is the largest need of the intellect.

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

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

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

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

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

There are truths that prove their discoverers witless.

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

Appearances are a glimpse of the obscure.

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

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