Now the real state of visible things is one of emptiness and relativity. All phenomena, mental and material, in all times and spaces, are to be conceived of as existing subjectively in the consciousness of every individual, as his own physical and mental states, and thus only; so that the differences and varieties which distinguish things from one another must be regarded as purely imaginary and misleading, without any foundation in fact. Grasp this, and you have the Truth, and everything will then appear to you as it is in reality; you will see it as it is in itself.
Doctrines of Nichiren (1893)