a1713 Ld. Shaftesbury (1715) III. iii. iii. 306 'Tis thought dangerous for us to be over-rational; or too much Masters of our-selves, in what we draw, by just Conclusions, from Reason only.
1965 9 Apr. 211/3 The man Diesel is..a proud, over-rational neurotic, with chronic headaches and occasional breakdowns.