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

There are truths that prove their discoverers witless.

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

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

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

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

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

New things are always ugly.

Appearances are a glimpse of the obscure.

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

The unknown is the largest need of the intellect.

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

Science is a cemetery of dead ideas.