"The fossil hunter must first of all be a scientific enthusiast. He must be willing to endure all kinds of hardships, …"

"Direct observation of the testimony of the earth ... is a matter of the laboratory, of the field naturalist, of indef…"

"Care for the race, even if the individual must suffer — this must be the keynote of our future. This was the guiding …"

"The Earth Speaks, clearly, distinctly, and, in many of the realms of Nature, loudly, to William Jennings Bryan, but h…"

"Today the earth speaks with resonance and clearness and every ear in every civilized country of the world is attuned …"

"But the voice of anatomy, like the voice of all nature, never reaches the mental ear of the Great Commoner. It is the…"

"Every breath you draw, every accelerated beat of your heart in the emotional periods of your oratory depend upon high…"

"We have to be reminded over and over again that Nature is full of paradoxes."

"Scientific education is catholic; it embraces the whole field of human learning. No student can master all knowledge …"

"Honest investigation is but the application of common sense to the solution of the unknown. Science does not wait on …"