Boredom is therefore a vital problem for the moralist, since at least half the sins of mankind are caused by the fear of it. - Bertrand Russell

It is clear that thought is not free if the profession of certain opinions makes it impossible to earn a living.

Physics is mathematical not because we know so much about the physical world, but because we know so little: it is only its mathematical properties that we can discover.

It seems clear to me that marriage ought to be constituted by children, and relations not involving children ought to be ignored by the law and treated as indifferent by public opinion. It is only through children that relations cease to be a purely private matter.