The two worst strategic ...

The two worst strategic mistakes to make are acting prematurely and letting an opportunity slip.
The two worst strategic mistakes to make are acting prematurely and letting an opportunity slip.

More phrases

Courage - a perfect sensibility of the measure of danger, and a mental willingness to endure it.
 William Tecumseh Sherman
Feeling, in the broad sense of whatever is felt in any way, as sensory stimulus or inward tension, pain, emotion or intent, is the mark of mentality.
 Susanne Katherina Langer
In that period, we had the Cold War mentality imbued through us - the Post-war [environment] and the Cold War. I think we were reflecting some of that. This was before the Wall collapsed, etc.
 Stephen Mallinder
The kind of group mentality that we had lived under since the Second World War is starting to erupt, and the craving for individualism is now much stronger. It's not as taboo anymore, as it was when I was younger.
 Nicolas Winding Refn
I come out of a Cold War sensibility, a Cold War mentality, and during those Cold War years, I used to know, I thought, the answers to everything. And since the end of the Cold War, I'm just a dumb as everyone else.
 Jules Feiffer

Quotes from the same author

Write your plans in pencil and give God the eraser.
“Defeat exists but not suffering. A true warrior knows that when he loses a battle, he is improving the skill with which he wields a sword. He will be able to fight more skillfully next time.”
The warrior is always trying to improve.
A warrior takes every opportunity to teach himself.
A warrior cannot lower his head - otherwise he loses sight of the horizon of his dreams.