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

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

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

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

What one man can invent another can discover.

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

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

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

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

Appearances are a glimpse of the obscure.

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

Science is a cemetery of dead ideas.

The unknown is the largest need of the intellect.