Don't raise your voice, improve your argument." [Address at the Nelson Mandela Foundation in Houghton, Johannesburg, South Africa, 23 November 2004]
![Don't raise your voice, improve your argument. [Address at the Nelson Mandela Foundation in Houghton, Johannesburg, South Africa, 23 November 2004]](http://cdn.quoteddaily.com/images/desmond-tutu/dont-raise-your-voice-improve-your-argument---address-at-the-nelson-mandela-foundation-in-houghton-johannesburg-south-africa.jpg)
Don't raise your voice, improve your argument." [Address at the Nelson Mandela Foundation in Houghton, Johannesburg, South Africa, 23 November 2004]