Step 1: Identify the issue in the sentence.
\nWhen comparing two things, we use the comparative degree ("taller") rather than the superlative degree ("tallest"). The superlative degree is used when comparing three or more things.\n\n
Step 2: Correct the sentence.
\nThus, the correct sentence is: "He is the taller of the two."\n\n \n
Final Answer: \n\\[\n\\boxed{\\text{He is the taller of the two.}}\n\\]