Tread softly, Brathe peacefully, Laugh hysterically.

If you want the cooperation of humans around you, you must make them feel they are important - and you do that by being genuine and humble.

The march to freedom is irreversible.

You can never have an impact on society if you have not changed yourself.

Racism is a blight on the human conscience. The idea that any people can be inferior to another, to the point where those who consider themselves superior define and treat the rest as subhuman, denies the humanity even of those who elevate themselves to the status of gods.

Nonviolence is a good policy when the conditions permit.

As the years progress one increasingly realises the importance of friendship and human solidarity. And if a 90-year-old may offer some unsolicited advice on this occasion, it would be that you, irrespective of your age, should place human solidarity, the concern for the other, at the centre of the values by which you live.