What one man can invent another can discover.

There are truths that prove their discoverers witless.

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

Appearances are a glimpse of the obscure.

What one man can invent another can discover.

The unknown is the largest need of the intellect.

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

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

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

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

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

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

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