Success usually comes to those who are too busy to be looking for it.

Today you may write a chapter on the advantages of traveling, and tomorrow you may write another chapter on the advantages of not traveling.

What stuff is the man made of who is not coexistent in our thought with the purest and sublimest truth?

I think that I cannot preserve my health and spirits, unless I spend four hours a day at least - and it is commonly more than that - sauntering through the woods and over the hills and fields, absolutely free from all worldly engagements.

Birds never sing in caves.

Scholars are wont to sell their birthright for a mess of learning.

Give me a country where it is the most natural thing in the world for a government that does not understand you to let you alone.