Thomas Hobbes

Hobbes on – what Nicolas Humphries calls – “natural psychology”

[Given] the simulitude of the thoughts and passions of one man to the thoughts and passions of another, whosoever looketh into himself and considereth what he doth, when he does think, opine, reason, hope, fear &c., and upon what grounds; he shall thereby read and know, what are the thoughts and passions of all other men upon the like occasions.

Leviathan, Oxford 1946. Cited on p. 6,  Conciousness Regained.