Famous quotes containing the words optical and/or pulse:
“People who have realized that this is a dream imagine that it is easy to wake up, and are angry with those who continue sleeping, not considering that the whole world that environs them does not permit them to wake. Life proceeds as a series of optical illusions, artificial needs and imaginary sensations.”
—Alexander Herzen (1812–1870)
“Whoever has had the experience of the moral sentiment cannot choose but believe in unlimited power. Each pulse from that heart is an oath from the Most High. I know not what the word sublime means, if it be not the intimations, in this infant, of a terrific force.”
—Ralph Waldo Emerson (1803–1882)