Friendship will not stand the ...

Friendship will not stand the strain of very much good advice for very long.
 Robert Staughton Lynd

Quotes from the same author

Any of us can achieve virtue, if by virtue we merely mean the avoidance of the vices that do not attract us.
 Robert Staughton Lynd
[History is] the story of the magnificent rear-guard action fought during several thousand years by dogma against curiosity.
 Robert Staughton Lynd