'Mind (manas) is better than speech. For as the closed fist holds two amalaka or two kola or two aksha fruits, thus does mind hold speech and name. For if a man is minded in his mind to read the sacred hymns, he reads them; if he is minded in his mind to perform any actions, he performs them; if he is minded to wish for sons and cattle, he wishes for them; if he is minded to wish for this world and the other, he wishes for them. For mind is indeed the self, mind is the world, mind is Brahman. Meditate on the mind.

In plain words: The mind is greater than speech, because it holds both speech and names, the way a closed fist holds a couple of small fruits. Whatever a person decides in their mind to read, do or wish for, they then do it.