What one man can invent another can discover.

The eternal mystery of the world is its comprehensibility.

Science is a cemetery of dead ideas.

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

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

One doesn’t discover new lands without consenting to lose sight of the shore for a very long time.

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

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

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.