What one man can invent another can discover.

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

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

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

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

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

The unknown is the largest need of the intellect.

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

There are truths that prove their discoverers witless.

New things are always ugly.

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

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

The eternal mystery of the world is its comprehensibility.