We cannot observe external things without some degree of Thought; nor can we reflect upon our Thoughts, without being influenced in the course of our reflection by the Things which we have observed.
-- William Whewell
   
William Whewell   Name:
William Whewell
Type:
Philosopher
Nationality:
English
Birth:
May 24, 1794
Death:
March 6, 1866
https://www.nutquote.com/quote/William_Whewell