The atavistic urge toward danger persists and its satisfaction is called adventure.

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

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.

What one man can invent another can discover.

Science is a cemetery of dead ideas.

New things are always ugly.

Appearances are a glimpse of the obscure.

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

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