Willpower is the key to success. Successful people strive no matter what they feel by applying their will to overcome apathy, doubt or fear.

Scalded cats fear even cold water.

Cruelty is a tyrant that's always attended with fear.

It is not power that corrupts but fear. Fear of losing power corrupts those who wield it and fear of the scourge of power corrupts those who are subject to it.

The thirst for powerful sensations takes the upper hand both over fear and over compassion for the grief of others.