Genius is a capacity for taking trouble.

The wilderness provides an environment for a child's inner life to develop because it requires him to be constantly aware of his surroundings.

Walking is the natural recreation for a man who desires not absolutely to suppress his intellect but to turn it out to play for a season.

When I ceased to accept the teaching of my youth, it was not so much a process of giving up beliefs, as of discovering that I had never really believed.

I believe that the ascent of mountains forms an essential chapter in the complete duty of man, and that it is wrong to leave any district without setting foot on its highest peak.

The division between faith and reason is a half-measure, till it is frankly admitted that faith has to do with fiction, and reason with fact.

If atheism is to be used to express the state of mind in which God is identified with the unknowable, and theology is pronounced to be a collection of meaningless words about unintelligible chimeras, then I have no doubt, and I think few people doubt.