personal equation, n.All

The Personal equation (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the beam in one's own eye that lets one detect the mote in a brother's — and that easily breeds a general theory that all motes are beams.

The Personal equation (n.) colours ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠every way of seeing, especially in psychology, where any system rests on a hypothesis shaped by the author's temperament; ultimate truth needs many voices.