There will still be things that machines cannot do. They will not produce great art or great literature or great philosophy; they will not be able to discover the secret springs of happiness in the human heart; they will know nothing of love and friendship.

As soon as we abandon our own reason, and are content to rely upon authority, there is no end to our troubles.

Every advance in civilization has been denounced as unnatural while it was recent

The degree of one's emotions varies inversely with one's knowledge of the facts - the less you know the hotter you get.

If all our happiness is bound up entirely in our personal circumstances it is difficult not to demand of life more than it has to give.

I found one day in school a boy of medium size ill-treating a smaller boy. I expostulated, but he replied: "The bigs hit me, so I hit the babies; that's fair." In these words he epitomized the history of the human race.

The true function of logic ... as applied to matters of experience ... is analytic rather than constructive; taken a priori, it shows the possibility of hitherto unsuspected alternatives more often than the impossibility of alternatives which seemed prima facie possible. Thus, while it liberates imagination as to what the world may be, it refuses to legislate as to what the world is