What one man can invent another can discover.

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.

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

The unknown is the largest need of the intellect.

The eternal mystery of the world is its comprehensibility.

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.

Appearances are a glimpse of the obscure.

How gloriously legible are the constellations of the heavens!

Science is a cemetery of dead ideas.

New things are always ugly.

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