It should limit the unthinkable from within through the thinkable.
4.115 OGD [→GER | →P/M] It will mean the unspeakable by clearly displaying the speakable.
4.116 OGD [→GER | →P/M] Everything that can be thought at all can be thought clearly. Everything that can be said can be said clearly.
4.12 OGD [→GER | →P/M] Propositions can represent the whole reality, but they cannot represent what they must have in common with reality in order to be able to represent it—the logical form.”