It is said in the Bhagavad-gītā—those who have read Bhagavad-gītā—daivī hy eṣā guṇamayī mama māyā duratyayā (BG 7.14). God has got multi-energies, and they are divided grossly into three: the external energy, the internal energy and the marginal energy. The external energy is this material nature, and the internal energy, there is another, spiritual nature. As you see this universe, as far as you can see or imagine, it is covered. This is material energy.
Beyond this covering there is another nature. That is spiritual nature. We get this information from the Vedic literature. Paras tasmāt tu bhāvo 'nyo 'vyakto 'vyaktāt sanātanaḥ (BG 8.20). And we living entities, we are the marginal energy. That means if we like, we can live in this material nature—if we like, we can transfer ourselves to the spiritual nature.
The spiritual nature is . . . it is not in . . . what is called, incompatible. Compatible. You can adjust yourself in the spiritual nature, but you cannot adjust yourself in the material nature. Therefore material nature, however you can make your plans for becoming happy, it will be frustrated. Because you do not . . . you cannot adjust yourself with this material nature.