"RS: If we are still living tomorrow, we at least have the possibility to read good books. For example those of the Jewish liberal Isaiah Berlin, who you also knew in person. What did you learn from him? JG: Isaiah was an incredibly tolerant person – and I believe that tolerance is an essential part of liberalism. Because tolerance means nothing other than everyone can become happy in his or her own way, as long as it does not bother others. Where tolerance is lacking, there is a need for legislation, rights, entitlements. RS: Berlin was a representative of negative liberty. To put it bluntly: to be free means to be left in peace by others. JG: Freedom is the absence of human obstacles that force me to act and live in a way I do not want to act or live. As long as man does not harm anyone, he can live how he wants to live – even if he does harm to himself. That must be borne by the others. Tolerance means precisely that I do not demand from others to live as I want to live. Negative freedom and tolerance are mutually dependent. Berlin was not a liberal fundamentalist – he accepted that in addition to the correct understanding of freedom there are also other values such as justice and social peace. Again, in the end consensus and weighing up are indispensable in a free society."