Knowledge is of two kinds. We know a subject ourselves, or w... - Samuel Johnson

"The mind is never satisfied with the objects immediately before it, but is always breaking away from the present moment, and losing itself in schemes of future felicity... The natural flights of the human mind are not from pleasure to pleasure, but from hope to hope."

"Life affords no higher pleasure than that of surmounting difficulties, passing from one step of success to another, forming new wishes and seeing them gratified."

"Life is not long, and too much of it must not pass in idle deliberation how it shall be spent."

"Friendship, like love, is destroyed by long absence, though it may be increased by short intermissions."

"That we must all die, we always knew; I wish I had remembered it sooner."