Consciousness can only be examined by consciousness. While the effects of thinking or states of emotion can be detected and even measured by instruments or seen by consequent actions or words, only consciousness can experience thought or emotions. Consciousness per se cannot be separated from self-awareness. In turn, self-awareness cannot be separated from the awareness of feeling. It may be very calm feeling and it may be very subtle at first.
Imagine being in a deprivation tank and having no thoughts but being vibrantly self-aware. Or, imagine staring at something until all thoughts cease and you are left only gazing ahead of you. At first, you might describe your awareness as being without feeling or emotion. Meditators can experience this and may call it "emptiness" or the void. Prolonged resting in such a state will either cause one to lapse into a trance-like state which is blankness (not advised!), or, there enters into the mind, whether imperceptibly like a rising tide or crashing upon you in a giant wave, an ocean of joy. Whether having entered no-thing-ness (short of a trance) or into bliss, either way, the meditator returns from the experience refreshed, relaxed and vibrantly energized.
We have a more limited experience of this each night in sleep. Sleep is closer to the trance state, however, and thus has no ability to change our consciousness or our life for the better. Nonetheless, without the rest of nightly sleep states we could not function in this world.
Ultimately, a saint or sage is one who increasingly unites the inner and the outer until “what you see is what you get,” meaning a person who is clear, pure, without self-interest, self-giving, wise, and gentle yet strong. At the same time, what you see is no-thing, for purity of mind can only be “seen” intuitively. In the presence of a saint, a skeptic might come away wondering what the saint's "angle" is, for we can only see extensions of our own consciousness.
But for those who gaze at the stars, or at the nobleness of true love or self-sacrifice, or the mystery of life and can intuit the presence of God, this feeling of awe and admiration gives rise to joy just as this joy gives rise to praise and to knowing that "Love is the Magician!" (The title of Swami Kriyananda's favorite musical composition.)