Tolstoi, [188].

'Totality,' the principle of, [277].

Triadic structure of mind, [123].

Truth, criteria of, [15]; and error, [18]; moral, [190-1].

UNITARIANS, [126], [133].

Unknowable, the, [68], [81].

Universe = M + x, [101]; its rationality, [125], [137].

Unseen world, [51], [54], [56], [61].

Utopias, [168].

VALUE, judgments of, [103].