There's a long list of historical quotes about planning, but I think this reference might be to a different Patton:
"A good plan violently executed now is better than a perfect plan executed next week." - George S. Patton
* "Those who are victorious plan effectively and change decisively. They are like a great river that maintains its course but adjusts its flow." ~ Sun Tzu
* "In preparing for battle I have always found that plans are useless, but planning is indispensable." ~ Dwight D. Eisenhower
* "Give me six hours to chop down a tree and I will spend the first four sharpening the axe." ~ Abraham Lincoln
"A good plan violently executed now is better than a perfect plan executed next week." - George S. Patton
* "Those who are victorious plan effectively and change decisively. They are like a great river that maintains its course but adjusts its flow." ~ Sun Tzu
* "In preparing for battle I have always found that plans are useless, but planning is indispensable." ~ Dwight D. Eisenhower
* "Give me six hours to chop down a tree and I will spend the first four sharpening the axe." ~ Abraham Lincoln