What famous aphorisms have unknown second half sentences?

There are some famous aphorisms, the second half of which is unknown. For example, if you leave me waist-length hair, can a teenager marry me? He is unknown, but he is afraid of waist-length hair, and teenagers fall in love with others. And success is 99% sweat and 1% inspiration. The second part of the unknown sentence is that sometimes 1% inspiration is more important than 99% sweat.