If you are distressed by anything external, the pain isnot due to the thing itself but to your own estimate of it; and this you havethe power to revoke at any moment.
I have learned through bitter experience the one supremelesson to conserve my anger, and as heat conserved is transmitted into energy,even so our anger controlled can be transmitted into a power that can movethe world.
The tormentof human frustration, whatever its immediate cause, is the knowledge that theself is in prison, its vital force and ‘mangled mind’ leaking away in lonely,wasteful self-conflict.