Because past environmental destruction was the result of ignorance, we can easily forgive it. Today, we are better informed. Therefore, it's essential that we make an ethical examination of what we have inherited, what we are responsible for, and what we will pass on to coming generations. Ours is clearly a pivotal generation. We have global communication and yet confrontation is more common than dialogue.
The words of language, as they are written or spoken, do not seem to play any role in my mechanism of thought. The physical entities which seem to serve as elements in thought are certain signs and more or less clear images.