Personally, People Know Themselves Very Poorly.

The Fact Is, Every Thinker, Every Philosopher, The Moment He Is Forced To Abandon His One-sided Intellectual Occupation By Practical Necessity, Immediately Returns To The General Point Of View Of Mankind.

A Colour Is A Physical Object As Soon As We Consider Its Dependence, For Instance, Upon Its Luminous Source, Upon Other Colours, Upon Temperatures, Upon Spaces, And So Forth.

The History Of The Development Of Mechanics Is Quite Indispensable To A Full Comprehension Of The Science In Its Present Condition. It Also Affords A Simple And Instructive Example Or The Processes By Which Natural Science Generally Is Developed.

A Movement That We Will To Execute Is Never More Than A Represented Movement, And Appears In A Different Domain From That Of The Executed Movement, Which Always Takes Place When The Image Is Vivid Enough.

Everyone Is Free To Set Up An Opinion And To Adduce Proofs In Support Of It. Whether, Though, A Scientist Shall Find It Worth His While To Enter Into Serious Investigations Of Opinions So Advanced Is A Question Which His Reason And Instinct Alone Can Decide. If These Things, In The End, Should Turn Out To Be True, I Shall Not Be Ashamed Of Being The Last To Believe Them.