Michio Kaku

We have to realize that science is a double-edged sword. One edge of the sword can cut against poverty, illness, disease and give us more democracies, and democracies never war with other democracies, but the other side of the sword could give us nuclear proliferation, biogerms and even forces of darkness.

In a sense the quest for the emancipation of black people in the U.S. has always been a quest for economic liberation which means to a certain extent that the rise of black middle class would be inevitable.