To have seen Italy without having seen Sicily is to not have seen Italy at all, for Sicily is the clue to everything.

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.

If I love you, what business is it of yours?

The force of a language does not consist of rejecting what is foreign but of swallowing it.

Nature knows no pause in progress and development, and attaches her curse on all inaction.

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

Every second is of infinite value.