Often an animal thinks more than man, only one can say that an animal is not so much developed. According to the mystic mind exists also in plants and trees; in rocks and mountains mind is hidden somewhere. Mind is working in all things imperceptibly, in all things that man only recognizes as objects. Comparison between two minds shows a vast difference between them, but it is difficult to define it. Some will have experienced in life how plants often respond to influences, especially to the human beings around them: how they often wither in a home where there is distress or disturbance or disharmony, and often live longer where there is harmony. And when their owners understand plants, they become responsive to love and harmony and sympathy; often plants feel the absence of these qualities. The condition of a person's mind can be seen in its effect on the plants in his surroundings.