In right knowledge the study of man must proceed on parallel lines with the study of the world, and the study of the world must run parallel with the study of man.
In Search of the Miraculous

It is impossible to recognize a wrong way without knowing the right way. This means that it is no use troubling oneself how to recognize a wrong way. One must think of how to find the right way.
In Search of the Miraculous

Knowledge can be acquired by a suitable and complete study, no matter what the starting point is. Only one must know how to "learn." What is nearest to us is man; and you are the nearest of all men to yourself. Begin with the study of yourself; remember the saying "Know thyself."
All and Everything: Views from the Real World