Darwin, [4], [11], [23], [30].

Data, [65] ff., [211].
“hard” and “soft,” [70] ff.

Dates, [117].

Definition, [204].

Descartes, [5], [73], [238].

Descriptions, [201], [214].

Desire, [227], [235].

Determinism, [233].

Doubt, [237].

Dreams, [85], [93].