The eternal mystery of the world is its comprehensibility.

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

How gloriously legible are the constellations of the heavens!

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

What one man can invent another can discover.

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

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

Science is a cemetery of dead ideas.

There are truths that prove their discoverers witless.

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.

Appearances are a glimpse of the obscure.

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