You manage things; you lead people.
Rear Admiral Grace Murray Hopper
A leader is a dealer in hope.
To command is to serve, nothing more and nothing less.
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Μένανδρος (Γνωμ. Μον.)
Ήκιστα πόλεμος επί ρητοίς χωρεί
A competent leader can get efficient service from poor troops, while on the contrary an incapable leader can demoralize the best of troops.
John J Pershing
The challenge of leadership is to be strong, but not rude; be kind, but not weak; be bold, but not bully; be thoughtful, but not lazy; be humble, but not timid; be proud, but not arrogant; have humor, but without folly.
To have long term success as a coach or in any position of leadership, you have to be obsessed in some way.
Management is efficiency in climbing the ladder of success; leadership determines whether the ladder is leaning against the right wall.
If you would not be forgotten, as soon as you are dead and rotten, either write things worth reading, or do things worth the writing.