Appearances are a glimpse of the obscure.

The unknown is the largest need of the intellect.

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

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

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

What one man can invent another can discover.

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

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

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

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

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

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

The eternal mystery of the world is its comprehensibility.