Excellence is rarely found, more rarely valued.

There is nothing more frightful than ignorance in action.

Napoleon affords us an example of the danger of elevating one's self to the absolute, and sacrificing everything to the carrying out of an idea.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

Everything is simpler than one can imagine, and yet complicated and inter-twined beyond comprehension.

The world is so empty if one thinks only of mountains, rivers and cities; but to know someone who thinks and feels with us, and who, though distant, is close to us in spirit, this makes the earth for us an inhabited garden.

All theory, my friend, is grey, But green is life's glad golden tree.