War can only be abolished by the establishment of a world government.

Whether science-and indeed civilization in general-can long survive depends upon psychology, that is to say, it depends upon what human beings desire.

The axiomatic method has many advantages over honest work.

Fear is the parent of cruelty, and therefore it is no wonder if cruelty and religion go hand in hand.

The more you complain the longer God lets you live

In emancipation from the fears that beset the slave of circumstance he will experience a profound joy, and through all the vicissitudes of his outward life he will remain in the depths of his being a happy man.

I used, when I was younger, to take my holidays walking. I would cover 25 miles a day, and when the evening came I had no need of anything to keep me from boredom, since the delight of sitting amply sufficed.