A good leader can engage in a debate frankly and thoroughly, knowing that at the end he and the other side must be closer, and thus emerge stronger. You don't have that idea when you are arrogant, superficial, and uninformed.

Nelson Mandela

"There is no conversation more boring than the one where everybody agrees. "

Michel de Montaigne

“In all debates, let truth be thy aim, not victory, or an unjust interest.”

― William Penn

“The smart way to keep people passive and obedient is to strictly limit the spectrum of acceptable opinion, but allow very lively debate within that spectrum....”

Noam Chomsky

“Don't raise your voice, improve your argument."

Desmond Tutu