My favourite quotes from the book The Art of War by Sun Tzu:

Hold out baits to entice the enemy. Faint disorder, and crush him.

If it is to your advantage, make a forward move; if not, stay where you’re.

If you know you’re enemy and you know yourself, you need not to fear the result of hundredth of battles . If you know yourself but not the enemy, for every victory gained you’ll also suffer a defeat. If you know neither your enemy nor yourself you will succumb in every battle.

Care about your team but also be a “hardass”.

Hire only great people.

Plan ahead.

Know your enemy.

All warfare is based on deception.

Exploit enemy’s weaknesses, avoid his strengths