Science is a cemetery of dead ideas.

Appearances are a glimpse of the obscure.

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

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

The unknown is the largest need of the intellect.

There are truths that prove their discoverers witless.

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

What one man can invent another can discover.

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

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