Every living entity, beginning from Brahmā, the first-born living being within the material world, down to the insignificant ant, desires to relish some sort of taste derived from sense perceptions. These sensual pleasures are technically called rasas. Such rasas are of different varieties. In the revealed scriptures the following twelve varieties of rasas are enumerated: (1) raudra (anger), (2) adbhuta (wonder), (3) śṛṅgāra (conjugal love), (4) hāsya (comedy), (5) vīra (chivalry), (6) dayā (mercy), (7) dāsya (servitorship), (8) sakhya (fraternity), (9) bhayānaka (horror), (10) bībhatsa (shock), (11) śānta (neutrality), (12) vātsalya (parenthood).
(Srimad Bhagavatam---1:1:3---purport).

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. As such, Lord Kṛṣṇa is described in the Brahma-saṁhitā as the cause of all causes.
(Srimad Bhagavatam--2:5:26-29---purport).

The qualities of sense perception are fully represented in the earth, and they are manifested in other elements to a lesser extent. In the sky there is sound only, whereas in the air there are sound and touch. In the fire there are sound, touch and shape, and in the water there is taste also, along with the other perceptions, namely sound, touch and shape. In the earth, however, there are all the above-mentioned qualities with an extra development of odor also. Therefore on the earth there is a full display of variegatedness of life, which is originally started with the basic principle of air. Diseases of the body take place due to derangement of air within the earthly body of the living beings. Mental diseases result from special derangement of the air within the body, and as such, yogic exercise is especially beneficial to keep the air in order so that diseases of the body become almost nil by such exercises.
(Srimad Bhagavatam--2:5:26-29---purport).

A living organism is sometimes manifested even in stone. Experience shows that some hills and mountains grow. This is due to the presence of the soul within that stone. Above that, the next manifestation of the living condition is development of consciousness, and the next manifestation is the development of sense perception. In the Mokṣa-dharma section of the Mahābhārata it is stated that trees have developed sense perception; they can see and smell. We know by experience that trees can see. Sometimes in its growth a large tree changes its course of development to avoid some hindrances. This means that a tree can see, and according to Mahābhārata, a tree can also smell. This indicates the development of sense perception.
(Srimad Bhagavatam---3:29:28---purport).

If, after a long time, somebody embarks on a homeward journey, the pleasure of being homeward—bound diminishes the accompanying distress of the journey. The inconveniences of traveling become subordinate to the pleasure of heading homeward.
Sense perception is the cause of feeling all sorts of happiness and distress. Form, taste, odor, sound, and touch are different sense perceptions, which render happiness or distress in cooperation with the mind. In winter, bathing in cold water gives us pain, but in summer, the same cold water gives us pleasure. In winter, fire gives us pleasure and warmth, but in summer, the same fire gives us distress. Thus, neither fire nor water has any intrinsic power to give us happiness or distress, but they appear to us as agents of happiness or distress, according to our mode of sense perception in various circumstances. Therefore, everything that exists in the world is neither an object of happiness nor an object of distress; everything is simply subjective—that is, subject to our sense perceptions as they relate to our processes of thinking, feeling, and willing.
(Message of Godhead).

It is not possible to obtain information of anything beyond this material nature by experimental means. That which is beyond our power of conception is called acintya, inconceivable. It is useless to argue or speculate about what is inconceivable. If it is truly inconceivable, it is not subject to speculation or experimentation. Our energy is limited, and our sense perception is limited; therefore we must rely on the Vedic conclusions regarding that subject matter which is inconceivable. Knowledge of the superior nature must simply be accepted without argument. How is it possible to argue about something to which we have no access? The method for understanding transcendental subject matter is given by Lord Kṛṣṇa Himself in Bhagavad-gītā.
(Teachings of Lord Caitanya).