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

The unknown is the largest need of the intellect.

There are truths that prove their discoverers witless.

The eternal mystery of the world is its comprehensibility.

New things are always ugly.

Science is a cemetery of dead ideas.

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

What one man can invent another can discover.

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

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