The physical and intellectual lives are not incompatible. I may go farther, and affirm that the physical activity of men eminent in literature has added abundance to their material and energy to their style; that the activity of scientific men has led them to innumerable discoveries; and that even the more sensitive and contemplative study of the fine arts has been carried to a higher perfection by artists who painted action in which they had had their part, or natural beauty, which they had travelled far to see. Even philosophy itself owes much to mere physical courage and endurance. How much that is noblest in ancient thinking may be due to the hardy health of Socrates! LETTER VI. TO AN AUTHOR IN MORTAL DISEASE. Considering death as a certainty--The wisdom learned from suffering--Employment of happier intervals--The teaching of the diseased not to be rejected--Their double experience--Ignorance of Nature's spoiled children--Benefit of disinterested thought--Reasons for pursuing intellectual labors to the last--Geoffroy Saint-Hilaire. When Alexandre Bixio lay on his death-bed, his friend Labrousse visited him, and exclaimed on entering the room, "How well you are looking to-day!" To this, Bixio, who was clearly aware of his condition, answered in these words:--"Voyons, mon pauvre Labrousse; tu viens voir un homme qui n'a plus qu'un quart d'heure a vivre, et tu veux lui faire croire qu'il a bonne mine; allons, une poignée de main, cela vaut mieux pour un homme que tous ces petits mensonges-lá."