Mengajukan tanya yang, kau tahu, kelak tak berjawab adalah dosa mendasar dalam sains, layaknya memberi perintah yang kau pikir akan diabaikan dalam b… - R. G. Collingwood

We can now return to the distinction between language and symbolism. A symbol is language and yet not language. A mathematical or logical or any other kind of symbol is invented to serve a purpose purely scientific; it is supposed to have no emotional expressiveness whatever. But when once a particular symbolism has been taken into use and mastered, it reacquires the emotional expressiveness of language proper. Every mathematician knows this. At the same time, the emotions which mathematicians find expressed in their symbols are not emotions in general, they are the peculiar emotions belonging to mathematical thinking.

A man ceases to be a beginner in any given science and becomes a
master in that science when he has learned that he is going to be a
beginner all his life.

The critic must therefore work from within. His negative position is based on his positive: his primary work is to supplement his author's partial account of some matter by adding certain aspects which the author has overlooked ; but, since the parts of a philosophical theory never stand to one another in a relation of mere juxtaposition, the omission of one part will upset the balance of the whole and distort the remaining parts; so his additions will entail some correction even of those elements which he accepts as substantially true.
20. Criticism, when these two aspects of it are considered together, may be regarded as a single operation: the bringing to completeness of a theory
which its author has left incomplete. So understood, the function of the critic is to develop and continue the thought of the writer criticized. Theoretically, the relation between the philosophy criticized and the philosophy that criticizes it is the relation between two adjacent terms in a scale of forms, the forms of a single philosophy in its historical development; and in practice, it is well known that a man's best critics are his pupils, and his best pupils the most critical.