We want far better reasons for having children than not knowing how to prevent them.

If an adult uses violence on a child, the child will naturally assume that he too, has the right to use it on one smaller or weaker.

There is no instinct that has been so maligned, suppressed, abused, and distorted by religious teaching as the instinct of sex.

Humanity will ever seek but never attain perfection. Let us at least survive and go on trying.

We do not want our world to perish. But in our quest for knowledge, century by century, we have placed all our trust in a cold, impartial intellect which only brings us nearer to destruction.

anybody who has anything abusive to say of women, whether ancient or modern, can command a vast public in the popular press and a ready agreement from the average publisher.

One of the problems with industrialism is that it's based on the premise of more and more. It has to keep expanding to keep going. More and more television sets. More and more cars. More and more steel, and more and more pollution. We don't question whether we need any more or what we'll do with them. We just have to keep on making more and more if we are to keep going. Sooner or later it's going to collapse. ... Look what we have done already with the principle of more and more when it comes to nuclear weapons.