The source of sin is pride.
Augustine of Hippo
Pride made the soul desert God, to whom it should cling as the source of life, and to imagine itself instead as the source of its own life.
Augustine of Hippo
Pride causes us to use our gifts as though they came from ourselves, not benefits received from God, and to usurp our benefactor’s glory.
Bernard of Clairvaux
Excessive scruple is only hidden pride.
Goethe
The more proud anyone is himself, the more impatient he becomes at the slightest instance of it in other people. And the less humility anyone has, the more he demands and is delighted with it in other people.
William Law
You can have no greater sign of a confirmed pride than when you think you are humble enough.
William Law
Pride and what it leads to
If you harden your heart with pride, you soften your brain with it too.
Jewish proverb
Pride is at the bottom of all great mistakes.
John Ruskin
What is the sign of a proud man? He never praises anyone.
The Zohar