Ridicule is the best test of truth.
ridicule truth
In seeking wisdom thou art wise; in imagining that thou hast attained it - thou art a fool.
life wisdom
Young men are apt to think themselves wise enough, as drunken men are apt to think themselves sober enough.
Let blockheads read what blockheads wrote.
book humorous-quotes read
You will find that reason, which always ought to direct mankind, seldom does; but that passions and weaknesses commonly usurp its seat, and rule in its stead.
mankind passions reason
We are really so prejudiced by our educations, that, as the ancients deified their heroes, we deify their madmen.
heroes inspirational prejudice
Common sense (which, in truth, is very uncommon) is the best sense I know of: abide by it; it will counsel you best.
common-sense inspirational