Two simultaneous facts profoundly interpenetrate consciousness. In this way, the temporal orders in which phenomena arrange do not allow arbitrariness. We naturally differentiate present sensation from the remembrance of past sensations. Within the domain of perception, the apprehension of time is relatively unequivocal.
“To doubt everything, or, to believe everything, are two equally convenient solutions; both dispense with the necessity of reflection.” – Henri Poincaré