The quality of decision is like the well-timed swoop of a falcon which enables it to strike and destroy its victim.

History is a relentless master. It has no present, only the past rushing into the future. To try to hold fast is to be swept aside.

The power of an air force is terrific when there is nothing to oppose it.

Shun no toil to make yourself remarkable by some talent or other; yet do not devote yourself to one branch exclusively. Strive to get clear notions about all. Give up no science entirely; for science is but one.

Whether you call my heart affectionate, or you call it womanish: I confess, that to my misfortune, it is soft.