What a cruel irony of fate, to pair together, like Siamese twins united by the shoulders, scientific adversaries of such contrasting character!

It is notorious that the desire to live increases as life itself shortens.

Intellectual beauty is sufficient unto itself, and only for it rather than for the future good of humanity does the scholar condemn himself to arduous and painful labors.

Physical pain is easily forgotten, but a moral chagrin lasts indefinitely.

It is idle to dispute with old men. Their opinions, like their cranial sutures, are ossified.

Unfortunately, nature seems unaware of our intellectual need for convenience and unity, and very often takes delight in complication and diversity.

The brain is a world consisting of a number of unexplored continents and great stretches of unknown territory.