Robert Henri said this quote

If we are cultivating fruit in an orchard, we wish that particular fruit to grow in its own way; we give it the soil it needs, the amount of moisture, the amount of care, but we do not treat the apple tree as we would the pear tree or the peach tree as we would the vineyard on the hillside. Each is allowed the freedom of its own kind and the result is the perfection of growth which can be accomplished in no other way. The time must come when the same freedom is allowed the individual; each in his own way must develop according to nature's purpose, the body must be but the channel for the expression of purpose, interest, emotion, labor. Everywhere freedom must be the sign of reason.