"I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is in fact in nature."

Next Quote

This intelligence itself is modified into what we call egoism, and this intelligence is the cause of all the powers in the body. It covers the whole ground, sub-consciousness, consciousness, and super-consciousness.

— Swami Vivekananda