Miser means, another sense of miser is one who cannot utilize money properly. Suppose one has got one million dollars from his father, but he is simply thinking that "I shall see the money and I shall not utilize it. If I go to utilize, I may lose it. Better I will see every day in my treasury box." He's also miser. Similarly, this human form of life, simply used for the sense gratification, is miser. He cannot utilize this form of body for increasing the asset of Kṛṣṇa consciousness. Therefore he is miser. And one who is properly utilizing this valuable life for understanding Kṛṣṇa, he is brāhmaṇa. Brahma jānāti iti brāhmaṇa. Brāhmaṇa means one who knows the Supreme Absolute Truth. He is called brāhmaṇa. The sacred thread is offered to a person who knows Kṛṣṇa. Otherwise it is not awarded. This is a symbolic representation. This man has got sacred thread, that means he knows Kṛṣṇa, Brahman, Supreme Brahman. Just like Arjuna, paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān (BG 10.12). In the Tenth Chapter you'll find. Arjuna says that "You are paraṁ brahma. Kṛṣṇa, You are paraṁ brahma." Similarly, if anyone knows Brahman, Parabrahman, Kṛṣṇa, he is brāhmaṇa. Brahma jānāti iti brāhmaṇa. One who knows the Supreme Brahman, Kṛṣṇa, he is brāhmaṇa. Not a person who is born in the family of a brāhmaṇa. He may be a caṇḍāla by his mentality.
So Bhāgavata says, yasya yal lakṣaṇaṁ proktaṁ puṁso varṇābhivyañjakam. There are symptoms. You'll find all these in Bhagavad-gītā, who is brāhmaṇa, who is kṣatriya, who is vaiśya, who is śūdra. By symptoms, by characteristics, you'll know. Similarly, if you find a man knows Kṛṣṇa, you must accept him: "He is a brāhmaṇa." He's a brāhmaṇa. Brahma jānāti iti brāhmaṇa. So the miser, the opposite word is liberal or brāhmaṇa. Miser knows his self-interest, "How much nice foodstuff I have got to eat daily." That's all. And liberal, "How much Kṛṣṇa prasāda I am distributing to the world." Liberal. A miser is thinking, "How much nice dishes I have eaten today. How much I have satisfied my tongue. Never mind I go to hell. Let me eat this, that, so many nice things. Let me satisfy my tongue." "Oh, for your tongue so many animals are being sacrificed, killed?" "Never mind. I want to satisfy my tongue." Miser. But Kṛṣṇa conscious person, he does not satisfy tongue. He wants to satisfy Kṛṣṇa, and whatever remnants, foodstuff, is there, he eats. That's all. He's liberal. These are the distinction between miser and liberal.