In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.

Perhaps the best hope for the future of mankind is that ways will be found of increasing the scope and intensity of sympathy.

It is only in marriage with the world that our ideals can bear fruit; divorced from it, they remain barren.

Boredom is... a vital problem for the moralist, since half the sins of mankind are caused by the fear of it.

What will be the good of the conquest of leisure and health, if no one remembers how to use them?

As soon as it is held that any belief, no matter what, is important for some other reason than that it is true, a whole host of evils is ready to spring up.

Those whose lives are fruitful to themselves, to their friends, or to the world are inspired by hope and sustained by joy: they see in imagination the things that might be and the way in which they are to be brought into existence.