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

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

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.

What one man can invent another can discover.

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

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

The discovery of a new dish does more for human happiness than the discovery of a star.

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.

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

The unknown is the largest need of the intellect.

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