They call you heartless; but you have a heart and I love you for being ashamed to show it.

One ought to hold on to one's heart; for if one lets it go, one soon loses control of the head too.

Those who cannot understand how to put their thoughts on ice should not enter into the heat of debate.

All truly great thoughts are conceived by walking.

Most thinkers write badly, because they communicate not only their thoughts, but also the thinking of them.

Our writing equipment takes part in forming our thoughts.