Sum Est. To persist in committing such errors is of the devil and the third possibility is not given. Sum arguments can be numbers arrays cell references etc.
Sum is the only truly irregular form. Human translations with examples. Latin sum es est sumus estis sunt.
Human translations with examples.
Errare humanum est perseverare autem diabolicum et tertia non datur to err is human. The stem for the imperfect indicative is er. Sum is the only truly irregular form. Denotes a logical conclusion see also cogito ergo sum.