The whole process of creation is an act of gradual evolution and development from one element to another, reaching up to the variegatedness of the earth as so many trees, plants, mountains, rivers, reptiles, birds, animals and varieties of human beings. The quality of sense perception is also evolutionary, namely generated from sound, then touch, and from touch to form. Taste and odor are also generated along with the gradual development of sky, air, fire, water and earth. They are all mutually the cause and effect of one another, but the original cause is the Lord Himself in plenary portion, as Mahā-Viṣṇu lying in the causal water of the mahat-tattva.
(Srimad Bhagavatam----2:5:26-29----purport).

The complete cosmic situation, both in the material and in the spiritual manifestations of the energies of the Lord, is working and moving first as the cause and then as the effect. But the original cause is the Supreme Personality of Godhead. Effects of the original cause become the causes of other effects, and thus everything, either permanent or temporary, is working as cause and effect. And because the Lord is the primeval cause of all persons and all energies, He is called the cause of all causes, as confirmed in the Brahma-saṁhitā as well as in the Bhagavad-gītā.
(Srimad Bhagavatam----2:6:33----purport).

Everything is generated from Lord Viṣṇu, everything is maintained by Him, and everything is annihilated by His energy. Therefore, by their actions and reactions, the energies which come from Him create the cosmic manifestations and also dissolve the whole creation. Thus the Lord is the cause and also the effect. Whatever effect we see is the interaction of His energy, and because the energy is generated from Him, He is both cause and effect. Simultaneously, everything is different and the same.
(Srimad Bhagavatam----4:7:50----purport).

As a fire, although existing in one place, can expand its light and heat everywhere, so the omnipotent Lord, the Supreme Personality of Godhead, although situated in His spiritual abode, expands Himself everywhere, in both the material and spiritual worlds, by His various energies. Since both cause and effect are the Supreme Lord, there is no difference between cause and effect. Consequently the ornaments and weapons of the Lord, being expansions of His spiritual energy, are not different from Him. There is no difference between the Lord and His variously presented energies.
(Srimad Bhagavatam----6:8:32-33----purport).

Kṛṣṇa wants us to give up all other engagements and surrender unto Him. If we do so, where will the cause and effect of this material world be? There is nothing like cause and effect for the surrendered soul. Śrīla Viśvanātha Cakravartī Ṭhākura says in this regard that being put into this material world is like being thrown into a mine of salt. If one falls into a mine of salt, he tastes only salt wherever he goes. Similarly, this material world is full of miseries. The so-called temporary happiness of the world is also misery, but in ignorance we cannot understand this. That is the actual position. When one comes to his senses—when he becomes Kṛṣṇa conscious—he is no longer concerned with the various conditions of this material world. He is not concerned with happiness or distress, curses or favors, or heavenly or hellish planets. He sees no distinction between them.
(Srimad Bhagavatam----6:17:20----purport).

Sat means "effect," asat means "cause," and param refers to the ultimate truth, which is transcendental tocause and effect. The cause of the creation is called the mahat-tattva, or total material energy, and its effect is the creation itself. But neither cause nor effect existed in the beginning; they emanated from the Supreme Personality of Godhead, as did the energy of time. This is stated in the Vedānta-sūtra (janmādy asya yataḥ). The source of birth of the cosmic manifestation, or mahat-tattva, is the Personality of Godhead. This is confirmed throughout Śrīmad-Bhāgavatam and the Bhagavad-gītā. In the Bhagavad-gītā (10.8) the Lord says, ahaṁ sarvasya prabhavaḥ: "I am the fountainhead of all emanations." The material cosmos, being temporary, is sometimes manifest and sometimes unmanifest, but its energy emanates from the Supreme Absolute Lord. Before the creation there was neither cause nor effect, but the Supreme Personality of Godhead existed with His full opulence and energy.
(Sri Caitanya Caritamrta----1:1:53----purport).

The material world, full of conditioned souls trying to lord it over matter, is a manifestation of the external energy of the Supreme Lord, and the spiritual world, full of perfect servitors of the Lord, is a manifestation of His internal energy. Since all living entities are minute sparks of the Supreme Personality of Godhead, He is the Supreme Soul in both the material and spiritual worlds. The Vaiṣṇavas following Lord Caitanya stress the doctrine of acintya-bhedābheda-tattva, which states that the Supreme Lord, being the cause and effect of everything, is inconceivably, simultaneously one with His manifestations of energy and different from them.
(Sri Caitanya Caritamrta----1:2:37----purport).

One's bodily luster and beauty, one's constitution, one's activities and one's qualities all depend on the law of cause and effect. There are three qualities in material nature, and as stated in the Bhagavad-gītā (13.22), kāraṇaṁ guṇa-saṅgo ‘sya sad-asad-yoni-janmasu: one takes birth in a good or bad family according to his previous association with the qualities of material nature. Therefore one seriously eager to achieve transcendental perfection, Kṛṣṇa consciousness, must eat kṛṣṇa-prasādam. Such food is sāttvika, or in the material quality of goodness, but when offered to Kṛṣṇa it becomes transcendental. Our Kṛṣṇa consciousness movement distributes kṛṣṇa-prasādam, and those who eat such transcendental food are sure to become devotees of the Lord. This is a very scientific method, as stated in this verse from Nala-naiṣadha (3.17): kāryaṁ nidānād dhi guṇān adhīte. If in all his activities a person strictly adheres to the mode of goodness, he will certainly develop his dormant Kṛṣṇa consciousness and ultimately become a pure devotee of Lord Kṛṣṇa.
(Sri Caitanya Caritamrta----3:1:92----purport).