He passed the quill across his forehead and the drops of ink made beams of light shine. Everything in Heaven and Earth is precise. If Moshe was given ink to write the Torah, he was given enough ink to write the Torah and not one drop more. We're not dealing here with end of season discounts and remnants. We're talking about the ink of eternity.
Nothing can be too little or too much.
Vayikra - is written much smaller than the rest of the word. It seemed to Moshe that it gave him too much importance. A mere man. Moshe put the aleph at the end of the word as Hashem had commanded him - but he wrote it small. The aleph is the letter that represents the will, the ego.