| 1 | Idealism is opposite to materialism. | |
| 2 | You have to go to materialism and dialectics. | |
| 3 | Spiritualism, then, suitably stands opposed to materialism. | |
| 4 | Over the past several years, the momentum has shifted away from hard-core materialism. The brain seems less like a cold machine. | |
| 5 | We must study dialectical materialism so that we can use it to guide our work. |