In behavioral sciences, the use of metatools plays a crucial role.

He is writing a thesis on dialectical materialism.

It is important to distance yourself from antisocial forces.

He achieved great success in his business, but as the proverb 'A thousand gold pieces' fur is not from one fox's armpit' suggests, it was not something he obtained overnight.

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He said, 'Man shall not live by bread alone,' teaching me that spiritual satisfaction is also important.