“Simon: 'You know men. We have delicate egos.'
Clary: 'I wouldn't describe Jace's ego as delicate.'
Simon: 'No, Jace's is sort of the antiaircraft artillery tank of male egos.”

“You need an Ego, if you didn't have an ego you wouldn't know who's mouth to put food in, when eating in a restaurant.”

“But by far the worst thing we do to males—by making them feel they have to be hard—is that we leave them with very fragile egos. The harder a man feels compelled to be, the weaker his ego is.”

“Thank you,” Skulduggery said to her. “I fear he was about to start insulting me.”
“I couldn’t let that happen,” she said. “Your ego is a fragile and delicate thing.”
“You see? You understand me.”

“The moment you become aware of the ego in you, it is strictly speaking no longer the ego, but just an old, conditioned mind-pattern. Ego implies unawareness. Awareness and ego cannot coexist.”

“When we have passed beyond individualising, then we shall be real Persons. Ego was the helper; Ego is the bar.”

“Do not kill your ego and do not let your ego to kill you. Control your ego and rule over it.”

“… the most common cause of death among alpha males was ego.”

“Ego=1/Knowledge
" More the knowledge lesser the ego, lesser the knowledge more the ego.”

“The weak are dominated by their ego, the wise dominate their ego, and the intelligent are in a constant struggle against their ego”