This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...ly the task of using fuel, but cannot obtain that fuel. To obtain it, the higher organisms need the faculty of consciousness. A plant can obtain its food from the soil in which it grows. An anim
al has to hunt for it. Man has to produce it.
read full book
A plant has no choice of action; the goals it pursues are automatic and innate, determined by its nature. Nourishment, water, sunlight
are the values its nature has set it to seek. Its life is the standard of value directing its actions. There are alternatives in the conditions it encounters in its physical background — such...