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

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

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

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

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

What one man can invent another can discover.

What one man can invent another can discover.

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

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

Appearances are a glimpse of the obscure.