We owealmost all our knowledge not to those who have agreed but to those who havediffered.

People who fight with fire usually end up with ashes.

The cause of liberty becomes a mockery if the price to be paid is the wholesale destruction of those who are to enjoy liberty.

Knowlege is two-fold, and consists not only an affirmation of what is true, but in the negation of that which is faise

Far better to think historically, to remember the lessonsof the past. Thus, far better to conceive of power as consisting in part ofthe knowledge of when not to use all the power you have. Far better to be onewho knows that if you reserve the power not to

Life is different than teacher, A Teacher teaches lesson, then keeps the exam. But the life keeps the exam first, then teaches the lesson,

Don'tstand by the water and long for fish; go home and weave a net.

Man's life would be wretched and confined if it were to missthe candid intimacy developed by mutual trust and esteem.

Nothing destroys authority more than the unequal and untimelyinterchange of power stretched too far and relaxed too much.

All excellent things are as difficult as they are rare

Listeningwell is as powerful a means of communication and influence as to talk well.

The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends upon the unreasonable man.