A barking dog is often more useful than a sleeping lion.

Conflict is neither good nor bad. Properly managed, it is absolutely vital.

To teach isto learn twice.

I have oftenregretted my speech, never my silence.

The more we see, the more we shall be able to imagine, and the more we imagine, the more we must think we see.

People whoare too concerned with how well they are doing will be less successful andfeel less competent than those who focus on the task itself... Somepsychologists call it a conflict between egoorientation, or between extrinsicand intrinsic motivation...

The property of power is to protect.

In oneof our concert grand pianos, 243 taut strings exert a pull of 40,000 poundson an iron frame. It is proof that out of great tension may come greatharmony.

He whocannot agree with his enemies is controlled by them.

Letevery eye negotiate for itself, and trust no agent.

There is no evil in the atoms, only in men's souls.

Only hethat has traveled the road knows where the holes are deep.