Nature is a whole and should be studied as such

Draw a circle about you today and tomorrow's circle will encompass it. The growth of the soul is like the growth of the tree, by consecutive circles, each new growth encompassing all the rest. The soul is exogenous and endogenous in its growth; it grows not only from within but also from without. Each age draws its circle around all those which are past. You may think cohesive attraction a great force – its sphere comprehensive – yet gravitation draws its circle around attraction and a thousand forces beside and gravitation itself is far from a final cause. Some giant mind will, in the distant future, stretch forth his hand and describe a circle which will include gravitation and all its antagonistic forces. You must learn to comprehend great principles and classify facts. By observing isolated instances, you loose the connection and become confused. Nature is a whole and should be studied as such.

Scenes in the Spirit World or Life in the Spheres