'A doctrine of consideration for others, similar to the golden rule, was taught by Confucius as the basis for all social and political conduct.' written in active voice

'Confucius taught a doctrine of consideration for others, similar to the golden rule as the basis for all social and political conduct.'

Explanation:

The given sentence is written in the passive voice because the subject 'Confucius' is not performing the action(taught) stated by the verb but rather receives it and the object and verb are being emphasized and shown interest in.

It can be converted into the active voice by substituting the subject to its original position and removing 'by.' This will help emphasize the subject in the sentence where it(the subject) is directly performing the action. Thus, the final sentence will follow the structure of 'subject(Confucius) + verb(taught) + object('a doctrine...conduct'). Therefore, the final sentence in the active voice reads as:

'Confucius taught a doctrine of consideration for others, similar to the golden rule as the basis for all social and political conduct.'