We don't inherit the earth from our ancestors; we borrow it from our children. This truth guides every decision we make.

The answer, my friend, is blowin' in the wind.

The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.

Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.

"The only way to deal with the unfree world is to become so absolutely free that your very existence is an act of rebellion."