The greatest enemy of a good plan is the dream of a perfect plan

Courage, above all things, is the first quality of a warrior.

It is even better to act quickly and err than to hesitate until the time of action is past.

Two qualities are indispensable: first, an intellect that, even in the darkest hour, retains some glimmerings of the inner light which leads to truth; and second, the courage to follow this faint light wherever it may lead.