In societies like the American and West European where the dynamics of energy come from freedom and where the climate and the whole ethos are those of freedom, censorship is bound to be at worst, stupid; at best, futile; and always, to some degree, inconsonant with the character of the society as a whole.

Power politics existed before Machiavelli was ever heard of; it will exist long after his name is only a faint memory. What he did, like Harvey, was to recognize its existence and subject it to scientific study.

Despite the success cult, men are most deeply moved not by the reaching of the goal but by the grandness of the effort involved in getting there - or failing to get there.

The fact is that life has become a sweepstake. Millions of people who have lost the sense of being able to make anything of the collective effort of shaping their economic society, now expect fortune to descend like pie from the sky.

There are almost no limits to the discoveries of how the human brain operates in illness and health, in sleep and waking and dreaming, in calm and under tension. The question is how far man can put these discoveries to use without using them not for cure but for power.

I am neither an optimist nor pessimist, but a possibilist.

The problem of freedom in America is that of maintaining a competition of ideas, and you do not achieve that by silencing one brand of idea.