Author of quotes: JK Rowling. Page 24

Decent people are easy to manipulate.

Required great courage to resist the enemies, but much more to go against friends.

Good and evil do not exist. There is only power, there is only power, and there are those who are too weak to seek it.

Man determined not inherent in the quality, and only his choice.
Another translation:
After all, man is not a property of nature, but of choice.

Curiosity is not a sin, but it must be kept in check.

Sometimes my brain surprises me.

The greatness arouses envy, envy engenders spite, spite spawns lies.

Many people are afraid of death and darkness for one reason - they are afraid of the unknown.