I have been cautioned to talk but be careful not to say anything. I do not consider this a difficult task.

Anybody can write the first line of a poem, but is a very difficult task to make the second line rhyme with the first

He had discovered a great law of human action, without knowing it- namely, in order to make a man or a boy covet a thing, it is only necessary to make the thing difficult to attain

Be careful about reading health books. You may die of a misprint.

Be careful about reading health books. You may die of a misprint.

An occultation of Venus is not half so difficult as an eclipse of the Sun, but because it comes seldom the world thinks it's a grand thing